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what is ptfe thread seal tape
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What is Teflon Thread Seal Tape & Its Uses

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What is PTFE (Teflon) thread seal tape?

PTFE is commonly known as Teflon which is a brand name for a synthetic chemical called polytetrafluoroethylene (PTFE) & used in many industries and many applications for preventing leakage. Thread seal tape is a simple and highly adaptable lubricating material used as a sealant in plumbing for pipes and ductwork. The lubricating property of Teflon tapes helps deep and prolonged the setting of the thread and also helps in preventing thread seizures after being unscrewed. It is a professional adhesive tape or plumbing tape, so it comes in specific cuts rolled on the spools. These spools are in a specific width and pre-cut to a specific range. It covers in a plastic case to protect its adhesive material from any damage during storage. And It is a long synthetic polymer that helps to seal the joint without hardening it.

PTFE Thread Seal Tape is a long synthetic polymer that helps to seal the joint without hardening it. Also, this lubrication property makes it easier to tighten and helps both pieces come in contact with each other, and protects them from physical wear and tear.

It is also very helpful to prevent leakage and sealing. This tape is hydrophobic and has extremely low friction. This property makes it an excellent choice for the pipe and sanitary & plumbing industries. Also, its chemical inertness helps in preventing cross-linkages with other polymers. Which makes it the best choice for presenting leakage in water, chemicals, or other solvents applications. 

Teflon Tape Seal Uses

PTFE Thread seal tape is often referred to as a plumber’s tape, Teflon tape, or thread sealant which is generally used to prevent leakage and sealing water, gas, and air through threaded connections, most effective on high-pressure lines. As a sealant and lubricating material, perfect for pipe fittings in the kitchen and bathroom. In fact, it is essential to use for household brass fittings unless a rubber seal or gasket is in place. Also, it is best for outdoor applications from tankless water heaters to irrigation systems and garden taps. In essence, PTFE tape comes in handy whenever you need a sturdy material to help tighten pipes to avoid leakages. It’s not just for plumbers, either – almost all households will need some of this handy tape sooner or later. Here are some common applications where PTFE thread tape seals are used mostly:

Applications where Teflon tape used

  • Water
  • Industrial
  • Air
  • Oil
  • Gas Food Processing

Teflon thread seal tape is used to prevent leakages from Water, Air, Oil, Gas, Industrial, & Food Processing applications. But it is useful when we use the right product for the problem. These PTFE Tapes are made from 100% pure PTFE material which is self-adhesive with excellent creep and chemical resistance properties. It is widely used for sealing purposes in extraction systems, chemical and paint industry, pump fittings, ceramics, ventilation systems, medical industry, pharmaceutical and biomedical industry, fans, turbines, dryers, and food industry.

Types & Specifications of Kesaria’s Teflon Tapes

Generally, Kesaria Rubber Industries manufactures Teflon tape in white color. But the huge demand in the Plumbing & Sanitary industry, we manufacturers in different-different colors as per your requirement. There are six types of PTFE tapes that depend on the color of the tape, function, and density. These characteristics are different for each type of tape and we will discuss them here one by one.

Kesaria’s PTFE Tapes Specifications:

Width: 12mm, 19mm, 25mm

Thickness: 0.10mm

Length: 5mtr, 8mtr, 10mtr, 12mtr, 15mtr

Composition: 99.9% Virgin PTFE

Temperature Range: -190° C to 280° C

Tensile Strength: Min 8N/mm²

Elongation: Min 50%

Pressure Resistance: Upto 30 Bar (2.0mpa)

Chemical Resistance: PH 0-14

Currently Available Sizes

12mm x 0.1mm x 10mtr (Teflon Thread Seal Tape)

12mm x 0.1mm x 12mtr (Teflon Thread Seal Tape)

19mm x 0.1mm x 10 mtr (Teflon Thread Seal Tape)

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Everything You Need To Know About Kesaria’s O-Rings Kit Box

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What is an O-ring box kit?

An o-ring box kit is a different size of o-rings hard-wearing storage. You could say that these o-ring is a bit of a ‘living fossil’ in terms of manufacturing and repairing components. Rubber o-rings are brought into the market in the 20th century. After that continuously increased their demand in the market. A rubber o-ring repair kit is a form of solving this issue. Due to their vast uses and simplicity by the nature, they’re widely used today.

And, as fast the worlds engineering, manufacturing, and components design are changing, the requirement for o-rings is increasing for the development, repairing, and sealing purposes. By the way, the materials specification changing in the manufacturing of o-rings make it more high-tech over time, but essentially these rubber rings remain a beautifully straightforward and reliable solution to a problem that was brought up more than a century ago.

O-ring Seal Box work

An o-ring kit box is a highly flexible range of the basic form of o-rings from small to large sizes. In this o-ring box, you can find different – different sizes that can be used in your daily work. Their size and material specifications are best suited for almost every application. They exist purely to create a better leakproof seal between two spare parts or other components, with the aim usually being to prevent the unwanted escape of liquids and gases applications. In this sense, they’re effectively a type of rubber gasket seal but the only difference is that being o-rings they are more commonly used in very high-pressure environments, where a normal rubber gasket or cork would likely be prone to failure.

Why o-ring repair kit important in your tools

Rubber O-rings are commonly used in connectors, cylinders, pumps,  and valves to seal joints between separate parts and prevent the leaking of liquids and gases. They’re almost used in static, dynamic, hydraulic, and pneumatic components, making them an especially versatile solution to a very widespread engineering issue. The O-rings repair kit is very helpful in the urgent time to fulfill orings requirement to repair or prevent unwanted leakage from your valuable application.

Kesaria’s O-ring box types

In Kesaria Rubber Industries, we manufacture three types of rubber o-ring kit boxes, with the name 5A – O-ring repair kit, 5B – O-ring repair kit, & 5C – O-ring repair kit, all these o-rings are available in the market in two materials NBR (Nitrile) & Silicone Rubber. 

5A – O-ring Repair Kit

This o-ring box consists of hard-wearing storage with 382 pieces in 30 assorted sizes. All size rubber rings have been kept separated and organized in the box. It is designed in such a way that can seal the liquid and gaseous media for a long time period and with high durability. 5A – O-ring Repair Kit are available in Silicone and NBR material in the following size chart:

O-Ring Box Size Chart - 5A

5B – O-ring Repair Kit

5B – o-ring kit is a most popular o-ring box that consists of a hard-wearing plastic box with 382 pieces in 30 sizes. All these orings are kept separately and organized form. It is very helpful to seal the liquid and gaseous applications with high durability. This 5B – O-ring Kit Box is available in Silicone and NBR material in the following size chart:

5C – O-ring Repair Kit

This o-ring box consists of hard-wearing storage with 382 pieces in 30 assorted sizes. All size rubber rings have been kept separated and organized in the box. 5C – O-ring Repair Kit can use in sealing liquid and gaseous applications for a long time. It is available in Silicone and NBR material in the following size chart:

O-Ring Box Size Chart - 5c
Impact of Weather on Rubber O Rings & How to handle it
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Impact of Weather on Rubber O Rings & How to handle it

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Impact of Weather on Rubber O Rings

Environmental conditions play a vital role in rubber o-rings functioning. Almost all o-rings are durable and are best suited to environmental changes but the effects of rain, temperatures, ice, ozone, and UV light impact shown in the performance of o-rings. The impact of these environmental changes must be taken into consideration when you are deciding to order rubber o-ring seals. The right choice of material can reduce failure in your valuable industrial applications.

Impact of Heat on Rubber O-Rings:

Rubber o rings have to face commonly two types of temperatures high and low. At the high-temperature rubber, elastomers can destroy quickly because temperature change could be caused by chemical changes over a long period of time. These changes can not be reversed by nature in cool temperatures.  These chemical changes are irreversible and can be the cause of elastomer failure by affecting its strength and integrity.

For specific high operating temperatures O-ring materials are as follows:

  • Nitrile − – 30°C to +120°C (-22°F to +248°F)
  • Hydrogenated Nitrile (HNBR) − -30°C – 150°C ( -22°F to 302°F)
  • Silicone rubber −  -60°C to 250°C (−76°F to 482 °F)
  • Polyacrylate−  – 160°C to 210 °C(320°F to 410 °F)

Impact of Cold on Rubber O-Rings:

Cold weather highly impacts rubber elasticity, which can affect its compression set, in the cold temperature it becomes harder and less flexible, and it can become brittle and break off. As we know that once the compression set worsens it can’t go to its original size due to some chemical changes. That can cause the rubber part to deteriorate. 

For specific low operating temperatures O-ring materials are as follows:

  • Nitrile −  -30°C to +120°C (-22°F to +248°F)
  • HNBR −  -30°C – 150°C ( -22°F to 302°F)
  • Silicone rubber −  -60°C to 250°C (−76°F to 482 °F)
  • FFKM− -42°C to +220°C  (−43.6°F to 428 °F)

Impact of Water on Rubber O-Rings:

When we use rubber seals to prevent leakage in high water-moisture-humidity, fluids, ironically, or rainy weather it can show some swelling problems that can lead to the failure of this rubber seal. As the same, temperature, and water also affect rubber’s chemical properties. It changes the size between the seal and gland; it makes these o-rings incompatible with the system environment and malfunctions.

For Specific Wet, Rainy or Humid Environment Environments Operating O-ring materialsare as Follows: EPDM, NBR, and Silicone.

Impact of O-Zone on Rubber O-Rings:

Ozone gas (O3) is a highly reactive gas composed of three oxygen atoms. It is derived from oxygen and is found throughout the earth’s atmosphere. Ozone exposure is usually caused by electrical arcing, ultraviolet light, and electromagnetic fields which is common in many manufacturing and industrial environments. Before installation, We need to store O-rings away from electrical equipment or motors and should be kept in a dark room that is away from direct sunlight. In these applications where long-term ozone exposure is high, use ozone-resistant materials O-rings such as EPDMor Fluorocarbon.

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Advantages & Disadvantages of Silicone Rubber

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Silicone Rubber is a polymer made up of siloxane (−R2Si−O−SiR2−, where R = organic rubber). It is a heat-resistant inert synthetic compound that comes in a variety of forms (oil, rubber, resin). Technically, it could be considered a part of the rubber family. But, if you define plastics widely, silicone is something of a hybrid between synthetic rubber and a synthetic plastic polymer.

Silicone can be used to make malleable rubber items including, sealants, adhesives, medicine, cooking utensils, thermal insulation, lubricants, electrical insulation hard resins, Iron Rest Pads, Extrusions Profiles, and spreadable fluids. Silicone is a highly versatile material valued for its flexibility, biocompatibility, and resistance to temperatures, UV light, radiation, and ozone.

Advantages of Silicone Rubber

Silicone rubber is a common sealing material for a wide range of industrial applications including automotive, medical, electronics, aerospace, and more. Here we are sharing some advantages of silicone rubber:

  • Heat Resistance: Silicone Rubber is a high heat & temperature resistance product. Some of its compounds are able to withstand up to 305 °C temperatures, not only high temperatures it can extend to low temperatures too, which means this synthetic rubber can maintain its flexibility even at -100°C.
  • High-Performing Rubber: It’s known for its very durability, good mechanical properties, suitability and flexibility in low compression sets of extreme heat or cold. And extremely reliable and trusted to keep up performance for a long time.
  • Environmental Resistance: It exhibits a high level of environmental factors resistance, including UV radiation, open flames, extreme temperatures, and corrosive chemicals.

Also Read: What causes Rubber to Deteriorate?

  • Thermal stability: Silicone is able to retain its shape, size, durability, flexibility in extreme hot or cold temperatures.
  • Moisture Sealant: It is a best suitable product for water repellent and malleable, which makes it an excellent sealant.
  • Highly Versatile: Silicone rubber has a capacity to be molded and shaped in any form to meet even the most detailed specifications. That formulation can be adjusted to downplay or enhance characteristics, such as flexibility, toughness and electrical conductivity.
  • Color Friendly: Silicone rubber can be molded in any color, because it has color prior to the curing process, so it exhibits a lasting, vivid shade.
  • Electrical properties: Silicone rubber productsare an excellent electrical insulator, however the addition of metal or carbon black can improve its conductive properties.
  • Range of Hardness: Silicone rubber has the ability to be formulated to exhibit different ranges of flexibility and hardness, depending on the needs of your application.

Disadvantages of Silicone Rubber

  • Tear strength: Silicone rubber has a poor tear strength, it’s the major disadvantage of it. This issue can be improved by adding some other ingredients, but it doesn’t naturally offer strength or abrasion resistance.
  • High Cost: It is a premium product similarly it has premium cost as compared to other rubber materials. It can be improved by some quality control. But as we all know every product cost is decided by its quality and adding components. So, you can contact our technician experts / specialists. They will help you to understand it.

Custom Silicone Seals From Kesaria Rubber Industries

Kesaria Rubber Industries pride itself as a high-qualitycustom molded rubber, TPE, PTFE parts and components providing company for more than 32 years. We have a team of more than 500 well-skilled people. They are working to provide the best quality rubber sealing product at a competitive price. If you are looking for custom molded parts for your application feel free to contact our experts here.

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What causes Rubber to Deteriorate?

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Rubber is a polymer-type material, that can stretch and shrink. Commonly rubber is two types natural rubber and synthetic rubber on an industrial scale. It is wonderfully useful and malleable material. Like other materials though, rubber degradation will eventually occur over time due to common environmental factors like light, heat, and ozone-related environmental changes. Typically, it can impair the functionality of critical rubber parts, like  Rubber O-rings, seals, gaskets, washers, grommets, and other rubber parts that could lead to machine failure.

What is rubber deterioration?

The term deterioration refers to the action or process of becoming impaired or inferior in functioning, condition, or quality. Rubber deterioration is a process of becoming impaired in industrial rubber parts. Rubber deterioration can happen due to various factors, such as light, heat, oxygen, and other environmental factors. Its greatest impact is typical with industrial rubber parts like rubber seals, gaskets, and o-rings. 

Causes of Rubber Parts Deterioration

There are some environmental factors that can physical and chemical changes to rubber seals. The effects of Light damage are referred to as UV degradation and can cause the rubber to become hard, crack, and even fade in color. The heat can shorten the molecular chains which causes the material to stretch once cooled down. The continuous expansion & contraction lead to the same issues that light exposure causes. And the oxygen attacks the double bonds in rubber chains, which leads it to deterioration. While each of these issues causes damage to rubber seals, It can be prevented by the right preparation.

Also Read: How To Improve Service Life Of Rubber Parts?

How to Prevent Rubber Deterioration?

When rubber products are started to manufacture, a computer-based modeling technique known as Finite Element Analysis(FEA) is used to predict the response to stress-strain of rubber material. The Finite Element stress analysis illustrates whether a proposed design will properly function to design specifications prior to manufacturing a mould tool. It can help to prevent rubber deterioration in the long term but still the end-user need to properly care for every rubber seal to ensure the last. It will help you to save significant costs. Also, it should be stored in a cool, dry, dark, and oxygen-free space. These are the most reliable conditions to store rubbers seals.

When rubber products are started to manufacture, a computer-based modeling technique is known as Finite Element Analysis (FEA). FEA is the process of simulating the behavior of a part or assembly under given conditions used to predict the response to stress-strain of rubber material. The Finite Element Analysis (FEA) stress analysis illustrates whether a proposed design will properly function to design specifications prior to manufacturing a mold tool. It can help to prevent rubber deterioration in the long term and provide significant cost savings.

There is some right rubber restoring techniques, it would be a sufficient level of care and maintenance. Rubber seals and certain polymer products can often be brought back from the brink of failure and restored to functionality. Follows are some simple and practical steps on how to prevent rubber deteriorationto restore your rubber seals to their former glory:

Step 1: Properly clean the area around the rubber seal, including water, dirt, or any other debris. 

Step 2: Clearly scrub off the excess grime or hardened debris. 

Step 3: Use an optimal conditioner for the seal you are hoping to revitalize. 

Step 4: Apply conditioners on the rubber seal as per instructions.

Step 5: Properly rub off the damaged areas using a file & reapply the conditioner for optimal restoration.

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Do You Know The Difference Between Neoprene & Nitrile (NBR) Rubber ???

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Many Rubber product manufacturersrely on various types of synthetic rubber due to various reasons. The demand for synthetic rubbers over natural rubber has increased very rapidly over the recent past. There are many types of synthetic rubber and they are broadly classified into two categories, namely; general-purpose synthetic rubbers and special purpose rubber. General-purpose rubbers are more common and widely used in many manufacturing processes. Neoprene and nitrile rubber are two such widely used general-purpose rubbers. The key difference between neoprene and nitrile rubber is that neoprene is produced by emulsion polymerization of chloroprene (2-chloro-1, 3-butadiene), whereas nitrile rubber is produced by emulsion polymerization of copolymers of butadiene and acrylonitrile.

Nitrile and neoprene exhibit similar properties, but with differing characteristics that make them useful for different applications. Both materials are elastic, and will return to their original shape when stretched. Nitrile is particularly resistant to chemicals, abrasion, and temperatures, while neoprene is valued for its weather resistance and durability.

What’s the difference between nitrile vs. neoprene for seals, gaskets, and insulation? Both elastomers provide good resistance to compression set and tearing. They withstand the same range of service temperatures, too. Some grades of neoprene offer excellent resistance to abrasion, but nitrile is known for its abrasion resistance at elevated temperatures.

Nitrile and neoprene rubber have many similarities, but there are some important differences between these elastomers. Below we provide a more in-depth look at the properties and advantages of nitrile and neoprene and their industrial uses.

PROPERTIES                  

NITRILE

NEOPRENE

ELONGATION400% to 600%100% to 800%
HARDNESS35 to 9015 to 95
COMPRESSION SETGoodGood
ABRASION RESISTANCEGood to ExcellentVery Good to Excellent
CRACKING RESISTANCE  GoodGood to Very Good
TEAR RESISTANCEGoodGood
FLAME RESISTANCEPoorVery Good to Excellent
MINIMUM TEMP.-34° C to -56° C-34° C to -56° C
MAXIMUM TEMP.+104° C to +137°C+104° C to +137° C
WEATHER RESISTANCEPoorGood
SUNLIGHT RESISTANCEPoorGood to Very Good
OZONE RESISTANCEPoorGood
OXIDATION RESISTANCEGoodGood
WATER RESISTANCEGood to ExcellentExcellent
STEAM RESISTANCEFairPoor to Good
GAS PERMEABILITYFair to GoodFair to Good
CHEMICAL RESISTANCE                                           Generally resistant to Gases, Aliphatic Hydrocarbon, Oils and Fuels Generally resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents
NO CHEMICAL RESISTANCE                        Generally attacked by Ketones, Ozone, Sunlight, Aromatic Oil, Flame, Weather                                                                                        Generally attacked by Esters, ketones, and chlorinated, aromatic, and nitro hydrocarbons

Also read: A Guide To Know The Difference Between Silicone Rubber & EPDM !! 

Nitrile Vs Neoprene Applications

Nitrile rubber is recommended for applications that require oil and fuel resistance, abrasion resistance, and temperature resistance up to 280° F. In mobile equipment and military vehicles, nitrile seals or gasketsare used in carburetor diaphragms, fuel systems, and hydraulic hoses as well as a popular option for highly durable and disposable medical gloves. Nitrile also supports rubber-to-metal bonding, which makes it a good choice for applications in the processing industry. Yet nitrile isn’t recommended for sealing and insulation that requires resistance to fire, sunlight, ozone, or weather.

Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Neoprene noise isolators are used to reduce sound vibrations from power transformers. Additional applications include expansion joints and bearing pads in built structures.

Compound selection is critical because choosing the wrong rubber can cause more than just a component-level failure. Depending on your application’s specific needs and requirements, both nitrile and neoprene offer a variety of benefits. 

 

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Is Rubber Better Than Plastic ?

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In the past, people have seen the progress of technology. From the simple usage of wood and cement to the invention of metal, mankind has really made great progress to become what they are today. Along with this progress are some changes to their lifestyle. These changes were brought about by the materials surrounding them, and two materials that revolutionized man’s life today arerubber and plastic.

It is quite easy to differentiate between the two. By simply looking at each material, one can immediately tell that a particular thing, or object, is made of rubber and not plastic, or vice versa. The only confusion between the two is when the term polymer is used. Yes, a polymer as a term that greatly denotes plastics, but nonetheless, this term also describes the characteristic of rubbers. Although rubber is more of the specific elastomer (a viscous or elastic variation of polymers), it is still considered to be a polymer for example, CR (chloroprene rubber, neoprene); SBR (styrene butadiene rubber); NBR (nitrile butadiene rubber); and EPDM (ethylene propylene diene methylene).

Certain plastics such as PVC(poly vinyl chloride) and polyethylene can be compounded and cured to have properties that are considered rubber-like. PVC is commonly used in rubber flooring. Vulcanization is an irreversible chemical process which transforms the putty-like, dough-like, or chewing gum-like rubber into a product that has tensile, elongation and memory similar to a rubber band. This amazing transformation from one physical state to another is what makes rubber different from plastic.

Plastics are usually thought of as thermal plastic materials. In other words, when they get hot they soften, and when they get cold they harden similar to candle wax. Rubber, however, over a much higher and lower temperature range will maintain its original room temperature physical properties such as elongation, memory, tensile and hardness. Rubber is tough, holds shape once formed, even at high temperatures. It stretches, snaps back, has good tensile strength and is medically safe, soft, pliable, and pure. It is used to make Sealing products like o rings, washers, seals, grommets, bush etc., automobile tires, rubber bands, sealing gaskets for food boxes, stoppers for medical industry & various other products for a wide range of industrial applications.

Whereas, Plastic has no stretch, it is not pliable, is brittle, and cracks easily. Plastic does not typically have great strength, can’t withstand dishwasher heat. It does not have a good temperature range, does not stretch and is lightweight.

When it comes to choosing the right materials for our products, we always do our research. We want to make sure you’re getting the safest, highly durable, heat resistant, non-toxic & most eco-friendly options for your products. That’s why, when we were creating our leak-proof sealing solutions, we chose rubber over plastic.   

CHARACTERISTICS                                         

RUBBER                                                                                                                            

PLASTIC

ENVIRONMENT SAFETY

BiodegradableNon Biodegradable

DURABILITY

Highly DurableCracks Easily

RECYCLABLE

YesYes

HEAT RESISTANT

Highly heat resistantCan’t resist heat melts easily

HARDNESS

40- 9020-100

ELONGATION STRENGTH

High elongation StrengthDoes not Stretch

LEAK PROOF

Can be molded to any shape, can stretch & fit into any component.Cannot provide sealing as it is hard, cannot stretch & break easily
FDA COMPLAINTYesNo

Rubber is durable, and more eco-friendly than plastic. It lasts longer, and stands up better against heat and cold than plastics. It’s safer for your products, too, with no estrogen-mimicking toxins like BPA to worry about. It is odorless, stain-resistant, hypoallergenic, and has no open pores to harbor harmful bacteria. 

Rubber is recyclable, even though you might not be able to leave it with your curbside pick-up, and it can be incinerated safety without toxic off-gassing. When burned, silicone reverts back into its harmless ingredients: amorphous silica, carbon dioxide, and water vapor (unlike plastic which releases toxins when burned).

Thankfully, you won’t have to worry about rubber breaking or cracking for a long time! It’s super durable, resisting melting, breaking, and warping. Chances are our sealing products will outlast for a longer period of time. 

FAQS
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7 Important Facts You Should Check Before Choosing Your Rubber Part Supplier !!

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Choosing a rubber parts manufacturer for your business can be a difficult process. Much like hiring an employee, selecting the right candidate to provide your company with high-quality parts is an investment that requires you to consider many factors. Enlisting the aid of a reliable parts manufacturer is a wise decision that could benefit your business, however, there are other considerations to be made before you commit to a particular supplier. Selecting a parts manufacturer is an important step in building the foundation for your long-term success. Finding the right supplier that can sufficiently meet your specific needs begins by first understanding how these companies can benefit you most. We’ve gathered the following facts that will help you identify the qualities of the ideal parts manufacturer.

1) Find A Supplier That Offers High Quality Product At Best Price With Effective Service

Your supplier should not compromise with quality as it serves the critical function of your product. To ensure quality of the Products manufactured & supplied your supplier should have a well defined quality monitoring system. Parts manufactured should be of high quality and comply with International standards & should be supplied to you at best price with on time delivery.

2) Should Have Enriched Experience In The Rubber Industry

Experience makes the difference. With maximum years of experience your supplier should hold a place amongst the top players in the Indian Rubber Industry. A Rubber Part manufacturer should have the experience of serving the rubber parts across a wide range of industries like Automotive, Electrical, Fluid Power, Home Appliances, Plumbing & Sanitary.

3) Should Offer Wide Product Range

Your supplier should be capable of manufacturing 100% high-quality rubber parts in a wide range such as in numerous materials, color, shapes & sizes by using different moulding techniques as per your requirement. With Intensive research and regular development it should ensure upgraded quality as per current industry standards. The ideal supplier should work with it’s customers closely and offer them a wide range of products in advance to meet their challenges & demands on time.

4) Should Have Quality Management Systems (QMS)

Your supplier should be an ISO 9001:2018 and IATF 16949 certified company. To ensure the quality of the Products manufactured & supplied it should emphasize on development of a process-oriented quality management system that provides continual improvement, defect prevention & waste reduction while manufacturing high-quality rubber components that comply with international standards.

5) Should Have Well Defined & Customer Focused Work Flows & Processes-

It should believe in a predefined workflow process that has a significant impact on the organization’s efficiency, productivity & customer experience. Pre-defined processes enable us to constantly step towards innovation & next-level performance to continually meet the ever increasing buyer standards.

6) Should Have High Precision Testing Equipment To Ensure Absolute Quality-

A Supplier should ensure that their products are developed from the latest technology for best product finish therefore it should have all the modern facilities, state of the art equipment & world class manufacturing facilities at its plant, which should have sophisticated technology to produce 100% quality parts. Its in-house tooling facilities should include mould designing & mould development software along with High speed CNC & VMC machines. For more accurate inspection and speed, the latest Automated Online Inspection System should be installed to avoid manual inspection errors & to ensure absolute quality.

7) Should Offer Customized & Standard Products To Suit Your Applications-

Your product is unique and requires unique rubber parts to fit well. Hence your supplier should be specialized in offering customized products as per the drawing, sample and application. It should have a dedicated development & tooling department to develop the exact products as per your concept and fitment. As the right fitment will enhance product performance and ensure 100% leak proof solution.

Kesaria Rubber Industries is a leading manufacturer & exporter of Rubber, TPE & PTFE components with enriched experience of more than 30 years & is specialized in providing absolutely flashless rubber parts with high accuracy as per international standards. We have a complete in-house facility with an amazing production capacity of more than 2.5 million parts per day to fulfill our customer’s requirements on time so that they can achieve their business goals. We ensure absolute quality, safety & durability of our products & have always met the ever growing demands of our customers as per changing technologies & market trends to exceed global standards.

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A Guide To Know The Difference Between Silicone Rubber & EPDM !!

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EPDM and silicone are two commonly used rubbers in industrial applications, with silicone acting as a general use rubber while EPDM is more specialized. Both are sometimes confused with one another. What’s the difference between EPDM and Silicone and when should you use one over the other? 

EPDM stands for Ethylene Propylene Diene Monomer. It’s a synthetic rubber popular in construction and automotive industries. Silicone, as Polydimethylsiloxane is commonly called, is an inorganic polymer, and based on quartz sand. It’s used in applications that range from automotive and aerospace to food and beverage.

How are EPDM and Silicone alike?

It’s easy to see why there’s some confusion. Both EPDM and silicone:

  • Offer excellent weathering resistance
  • Are excellent as electrical insulators
  • Maintain flexibility down to around -50°C/-58°F
  • Stand up to some chemicals
  • To a varying degree, have great compression set
  • Are popular as water-system seals, O-rings, hoses and membranes
  • Can be finished to an extremely smooth surface
  • Are flame retardant
  • Withstand high temperatures, to a varying degree

That’s where their similarities end, however. Let’s take a look at the advantages that each material offers.

The Advantages of EPDM

  • EPDM has a stable, saturated polymer backbone structure, which gives the material its advantages. 
  • Of all the EPDM rubber is the most water resistant, which is why it’s so popular for outdoor applications and is often used as a roofing material.
  •  EPDM stands up to harsh weather conditions such as sleet and snow.
  • Another reason for its use outdoors, particularly in construction, is its excellent resistance to abrasions and tears and ability to stand up to the degrading effects of weathering, ozone and UV ray exposure.
  • EPDM also offers good electrical resistance. Its chemical properties make it especially suitable for electrical insulation and gaskets. 
  • It resists polar solvents, and not just water, but also acids, alkalis, and phosphate esters. 
  • EDPM does a great job of withstanding steam and low and high temperatures, though silicone can take on even higher temperatures.
  • The material has a low compression set, so it won’t lose much resilience over prolonged pressure.

The Advantages of Silicone

  • Silicone is food safe. It’s an incredibly versatile material, thanks to its chemistry and the many ways that it can be modified. Consequently, it offers vast possibilities.
  • Perhaps its most appealing characteristic is its ability to take on extremely high temperatures, which is why it’s especially popular for masking applications. Manufacturers will all give different melting points based on their experience and own criteria, but generally silicone can stand up to 232°C/ 450°F. Compare that to EPDM’s 148°C/300°F.
  • Like EPDM, Silicone has outstanding resistance to ozone and weathering.
  • Silicone can be modified to stand up to water, as seen by such products as silicone sealants. 
  • On the plus side, Silicone is resistant to automotive brake fluids, while EPDM is not. Silicone also has an excellent compression set, which is even lower than EPDM.

At a glance: EPDM vs Silicone

EPDM

Silicone

Temperature Range: -40˚C – 150˚C/ -40˚F – 302˚FTemperature Range: -55˚C – 250˚C / -67˚F – 4482˚F
Good compression setExcellent compression set
Excellent weather resistanceExcellent weather resistance when modified
Approx. tensile strength 14 MPaApprox. tensile strength 5 MPa
Good abrasion resistancePoor abrasion resistance
 
Not compatible with:
  • Oils
  • Greases
  • Hydrocarbon fuels
  • Aromatic hydrocarbons
  • Concentrated acids
  • Halogenate solvents
Not compatible with:
  • Hydrocarbon fuels
  • Alkalis and acids
  • Steam over 121°C/249°F
  • Trichlorethylene
  • Aromatic hydrocarbon
Compatible with:
  • Hot and cold water
  • Alkalis
  • Dilute acids
  • Steam
  • Ketones
  • Fireproof hydraulic fluids
Compatible with:
  • Oils
  • Brake fluids
  • Hot and cold water
  • Salt water
  • High molecular weight chlorinated hydrocarbons
  • Fire resistant hydraulic fluid

Where will you find EPDM?

Wherever water and abrasion resistance are the first priorities, but EPDM isn’t only for outdoor applications; its water resistance makes it an excellent seal for plumbing applications too. Here are the most popular applications for EPDM and how it’s used.

    1. Used in HVAC:  To Supports thermal expansion and resists vibration. Example – Grommets that isolate vibrations while providing an airtight dust and watertight seal.
    2. Used in Enclosures:  To provide good resistance to polar solvent. Example- Sealing gaskets are used on metal sheets, providing an extra seal while isolating vibrations and keeping enclosures free of dust and water.
    3. Used in Automotive: Bonds quickly with metal, offers a strong barrier against the weather, and reduces force of engine’s vibrations. Example- Flexible top bubble gaskets can be pressed by hand or automation & Dual-hard self-adhesive gaskets for areas that need to stand up to daily rigorous demands.
    4. Used in Masking: As it is resistant to chemicals. Example- Tight seal of Easy pull masking caps prevents paint ingress as well as quick to apply and remove.
    5. Used in Construction: Water and abrasion resistant. Example- Single flipper gaskets create a weather seal around vents, doors and other openings. Flexible profiles can be applied by hand. Used as a roofing membrane, especially for low-sloped buildings.
    6. Consumer Appliances: Protects against vibrations. Example- Washing Machine Foot with Shore A 70 rubber base to prevent appliances from moving due to vibration.

Where will you find Silicone?

Silicone properties include elongation, good thermal conductivity, and high resistance to very high temperatures make it a versatile material. Here are just some of the applications where it’s often used.

  1. Used in HVAC: Excellent compression set. Example- Fan mounts with high elongation provide excellent shock and vibration protection.
  2. Used in Masking: Resistant to extremely high temperatures, which allows for blasting, powder coating, e-coating, anodizing, plating and wet painting. Example- High-temperature plugs provide excellent sealing for plating, anodizing, spray  painting and other finishing applications. Masking pull plugs for threaded and plain through holes  material is flexible  enough to allow for variation in sizes that need masking. Versatile masking straight caps fit over studs, pins or tube ends. Plugs mask threaded and non-threaded holes. Range of colors possible for easy identification.
  3. Used in Electronics: Excellent stability against mechanical and electrical shock and vibration. Example- USB and RJ Plugs protect entry from dirt and moisture ingress.
  4. Used in Industrial: Flame retardant, flexible and protects from radiation. Example-  Fire protection sleeves are self-extinguishing, Mouse tails plug very small holes with tight, sealed fit, Rotary dampers include silicone among other materials to provide damping resistance.
  5. Used in Cable Management: Outstanding thermal range and elongation. Example- Cable straps can be stretched and wrapped around bundles.

Both EPDM and silicone have their merits and drawbacks, depending on the application they’re used for. If you’d like more information on these and other types of rubber, you can check out our blog- https://www.kesaria.com/blog/what-are-the-different-types-of-rubber-material/

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Do You Know The Ways To Prevent Failure Of Rubber Parts ???

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Rubber is probably one of humanity’s greatest inventions, it is a very useful & malleable material but chances are something made of rubber has let you down at some point in your life. Like most  elastomers rubber will also undergo significant changes over time when exposed to heat, light and ozone.These changes can have a dramatic effect on the service life and properties of the rubber products also can impair the functionality of critical rubber parts, like seals, O-rings, washers, gaskets etc. and could lead to machine failure which can of course have potentially catastrophic consequences. Read on to find out more about typical rubber deterioration causes and practical ways to prevent rubber deterioration.

What is Rubber Deterioration?

Natural rubber and synthetic elastomers deteriorate on aging as a result of the contribution of a number of factors. It has been generally recognized for many years that the changes in properties on aging are due primarily to the deteriorating effects of one or more of the following factors: heat, light, oxygen, and ozone. Some non oxidative thermal changes are involved but the effects of heat and light are for the most part a result of their effect upon the oxidation reaction. Oxidative and thermal ageing of rubber are accelerated by stress and reactive gases, like ozone, resulting in cracking, charring and color fading. However, the addition of antioxidants, UV stabilizers and antiozonants can slow or prevent these types of issues.

Oxidative rubberdegradation can cause hardening or softening, depending on the structure of the elastomer. Hardening is more common because free radicals produced due to heat, oxygen and light combine to form new crosslinks, which reduces the flexibility of the rubber. Although the general mechanism of autoxidation is well understood, the actual chain scission and crosslinking steps are often unknown. They depend on the composition of the rubber including concentration of accelerators, activators, and fillers as well as on the temperature and composition of the atmosphere. 

How does Rubber Products deteriorate?

Natural rubber and synthetic elastomers deteriorate on aging as a result of the contribution of a number of factors. It has been generally recognized for many years that the changes in properties on aging are due primarily to the deteriorating effects of one or more of the following factors: heat, light, oxygen, and ozone. Some non oxidative thermal changes are involved but the effects of heat and light are for the most part a result of their effect upon the oxidation reaction. Thus oxygen in the form of O2 or O3 is the primary cause of deterioration of elastomers. Rapid combination with ozone is a characteristic reaction of unsaturated organic compounds. 

Also Read: Causes of Rubber Parts Deterioration

The two main forms of rubber degradation are: hardening (or embrittlement) and softening. From a molecular perspective, these chemical processes are known as “chain hardening” and “chain scission” respectively. The chemical makeup of the polymer will determine which type of deterioration will ultimately occur. For instance, the polymer polybutadiene and its copolymer derivatives – such as styrene-butadiene-styrene (SBS) and nitrile rubber (NBR) – is developed using a process called cross-linking, which involves joining polymer chains together to form one single molecule. Free radicals produced by heat, oxygen and light combine to form new crosslinks, which reduces flexibility and leads to hardening. This is chain hardening.

Natural rubber (polyisoprene) and other isoprene polymers, on the other hand, are susceptible to chain scission. These types of rubber are developed using polymerization, which entails bonding multiple identical molecules – or monomers – to form a polymer. As such, their polymer main chain is liable to degrade, which is the act of chain scission, and leads to the softening of the rubber material.

How can we prevent rubber products from deterioration ?

DMA Analysis:

Even before a rubber product is manufactured, a technique known as DMA (Dynamic Mechanical Analysis) can be used to predict a rubber material’s response to stress-strain conditions. DMA stress analysis illustrates whether a proposed design will function to design specifications prior to manufacturing a mould tool.

After Ageing Properties:

Apart from DMA Ageing properties were tested according to the ASTM D573-99 Standard Test Method for Rubber – Deterioration in an Air Oven. The tensile and physical properties namely hardness, tensile strength, elongation at break, modulus 300%, tear strength were measured before and after ageing for each aging time. This can help to prevent rubber deterioration in the long-term and provide significant cost-savings.

Ozone Testing:

When ozone comes in contact with rubber, the double and triple chemical bonds are attacked causing the cracking that is commonly seen on the surface of some rubber products. Conducting controlled, laboratory Ozone Testing of material samples against industry standards also provide us critical information needed to make formulation decisions.

Compound Designing:

Rubber compounds are complex mixtures of polymers, reinforcing fillers, oils / plasticizers, curatives, stabilizers, and other additives that are combined in relatively quick mixing processes. Durability is impacted by all these ingredients, their interactions, and the quality of the mixing. By Compounding  Designing we are able to find out the correct proportion & composition of mixing various compounds in order to prevent the deterioration of our sealing products such as O Rings, Gaskets, Washers, Grommets, Bellows, etc.

Related Post: 5 Essential Considerations Before Designing Rubber Products !!!

Addition Of Antiozonants & Other Additives:

Apart from above methods & techniques the problem can be prevented by adding antiozonants to the rubber before vulcanization. With the help of additives rubber deterioration can be prevented. A common and low cost antiozonant is a wax which bleeds to the surface and forms a protective layer, but other specialist chemicals are also widely used.

On the other hand, the problem does recur in unprotected products such as rubber tubing and seals, where ozone attack is thought to be impossible. Unfortunately, traces of ozone can turn up in the most unexpected situations. Using ozone-resistant rubbers is another way of inhibiting cracking. EPDM rubber and butyl rubber are ozone resistant, for example. For high value equipment where loss of function can cause serious problems, low cost seals may be replaced at frequent intervals so as to preclude failure.

With the right rubber restoring techniques, and a sufficient level of care and maintenance, rubber seals or products of certain polymer types can often be brought back from the brink of failure and restored to functionality. 

To know more in depth about how to improve service life of rubber parts read our another blog

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