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O-Ring Material Selection Guide

  • Standard CompoundSpecial Compound

Rubber compounds are a mixture of polymers, fillers, anti-oxitives and curatives. Various combinations can improve specific properties. Special compounds can be made to broaden temperature range or improve fluid resistance. These may add to lead time, but can lead to better application performance.

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Ethylene-Propylene

Material Selection Guide

Ethylene Propylene

Trade Names:

  • Nordel . . . Dow Chemical
  • Keltan® . . . Lanxess Corporation
  • Royalene . . . Chemtura Corporation

ASTM D1418 Designation: EPDM

ASTM D2000/SAE J200 Type, Class: AA, BA, CA, DA

Apple Compound Designation: EP

Standard Color: Black

Description: A copolymer of ethylene and propylene (EPR), combined with a third comonomer adiene(EPDM), Ethylene Propylene has gained wide seal industry acceptance for its excellent ozone and chemical resistance characteristics.

Key Use(s): Outdoor weather resistant uses. Automotive brake systems. Automobile cooling systems. Water applications. Low torque drive belts.

Temperature Range
Standard Compound: -40° to +275°F
Special Compound: -67° to +302°F

Hardness (Shore A): 40 to 95

Features: When compounded using peroxide curing agents high temperature service can reach +350°F.  Good resistance to acids and solvents (i.e. MEK and Acetone). 

Limitations: Have no resistance to hydrocarbon fluids.

 


 

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Video: 5 Things You Need to Know to Avoid Automated Assembly Issues

Video: 5 Things You Need to Know to Avoid Automated Assembly Issues

Recognizing seal feedability problems during the production process often occurs too late for a simple solution. That’s why we created a video that outlines exactly what you need to be on the lookout for.

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This tool is meant to be used as a professional guide only. Because no two situations or installations are the same, these comments, suggestions, and recommendations are necessarily general and should not be relied upon by any purchaser without independent verification based on the particular installation or use. We strongly recommend that the seal you select be rigorously tested in the actual application prior to production use.

Questions?

*Please use our quick form for all Sample Request, Request for Quote or Engineering Requests.