Description
Important size dimensions that need to be considered when specifying grommets include inside diameter, outside diameter, thickness or working height, groove thickness, and groove depth. We manufacture Rubber Grommets of different shapes & sizes made from a variety of rubber grades like SILICON, EPDM, TPR, NBR, NEOPRENE, SBR & NATURAL. The hardness rating on a Shore A scale for Grommets can be 30 ~ 85 durometer. Exact specifications should be clarified by our engineers, as the chemical and physical properties of grommets can differ based on manufacturing technique & application.
Material Selection Guide
| MATERIAL | NR | SBR | NBR | CR | EPDM | HNBR | ACM | CSM | SILICONE | FKM (VITON) |
| HARDNESS RANGE ( SHORE A) | 40-90 | 35-90 | 40-90 | 40-80 | 40-90 | 40-90 | 40-80 | 40-80 | 30-80 | 50-90 |
| HIGH TEMP C | 100 | 120 | 130 | 130 | 150 | 150 | 180 | 150 | 230 | 225 |
| LOW TEMP C | -50 | -55 | -45 | -40 | -50 | -45 | -25 | -40 | -60 | -15 |
| STEAM | F | F | F | P | G | G | P | E | E | E |
E= EXCELLENT; G= GOOD; F= Fair; P= Poor; A=Available, NA= Not Available
This guide is intended for general reference only. The materials listed are the most commonly used. There are numerous compound variations designed for specific applications for which please forward details to our engineers for a recommendation.
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