Rubber materials
The right compound depends on what the part touches, how hot and cold it gets, and how it moves. These are the elastomers we extrude, mold and cut most often. Each page covers what the material is, what it resists, and where we use it.
Materials we work in
| Material | Known for | Typical service temperature |
|---|---|---|
| EPDM | Weather, ozone and water resistance | -40 °F to +275 °F (-40 °C to +135 °C) |
| Silicone | Wide temperature range, FDA grades | -65 °F to +400 °F (-54 °C to +204 °C) |
| Nitrile (NBR) | Oil and fuel resistance | -30 °F to +212 °F (-34 °C to +100 °C) |
| Viton™ / FKM | Chemical and high-temperature resistance | -15 °F to +400 °F (-26 °C to +204 °C) |
| Neoprene (CR) | General purpose, oil and weather resistance | -40 °F to +225 °F (-40 °C to +107 °C) |
| Fluorosilicone | Fuel and oil resistance with silicone range | -65 °F to +350 °F (-54 °C to +177 °C) |
| Butyl (IIR) | Gas impermeability | -40 °F to +250 °F (-40 °C to +121 °C) |
| SBR | Abrasion resistance at low cost | -40 °F to +212 °F (-40 °C to +100 °C) |
| Natural Rubber (NR) | Resilience, tensile strength and tear resistance | Depends on the compound; ask us for the grade you need |
Temperatures are typical for general-purpose grades. The compound, the hardness and the service conditions decide what a part can take, so we confirm the compound with your quote.
Other materials
We also die cut PTFE, cork, graphite, felt, vegetable fiber and closed-cell sponge, and flash cut PTFE, cork and closed-cell sponge. We mix elastomer compounds in house for color matching and batch-to-batch consistency.
Specifications
If your drawing calls out a standard instead of a material, see ASTM D2000 callouts, AS568 O-ring sizes and FDA-compliant materials.
Not sure which material?
Send us a drawing, a sample part or a rough sketch. We will review it, recommend the right material and process, and give you a firm ship date with your quote.
Viton™ is a trademark of The Chemours Company.