Material guides, testing & engineering
Technical Resources
Choosing the right elastomer or thermoplastic for your application is one of the most important steps in any extrusion or molding project. The resources below are maintained by our engineering team to help you make informed decisions.
Elastomeric Material Selection Guide
A side-by-side comparison of common elastomers (SBR, EPDM, FKM, silicone, nitrile, neoprene, PVC, TPV, and more) with advantages, limitations, application notes, and operating temperature ranges.
Read more →Material Engineering
Engineering guidance for selecting the right compound, durometer, and process for your application.
Read more →Testing Capabilities
ASTM-method conformance testing in our in-house quality lab — rheometer, Mooney viscosity, durometer, tensile, tear, compression set, fluid resistance, flammability, heat aging, and more.
Read more →DBE / WBE / MBE Certifications
Disadvantaged, Women-Owned, and Minority-Owned Business Enterprise certifications held by Northwest Rubber Extruders, Inc.
Read more →NWRE US Patents
US Patents 6,422,478 (Crossing Tie Pads) and 7,278,588 (Under Tie Pads) — engineered for the demanding needs of modern rail systems.
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