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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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Polyacrylate

Material Selection Guide

Polyacrylate

Trade Names:

  • HyTemp ACM . . . Zeon
  • Acralen A . . . Bayer Polymer

ASTM D1418 Designation: ACM

ASTM D2000/SAE J200 Type, Class: DH; DF

Apple Compound Designation: PY

Standard Color: Black

Description: Polyacrylates are copolymers (ethyl acrylates) possessing outstanding resistance to petroleum fuels and oils.

Key Use(s): Sealing automatic transmissions & power steering systems. Sealing petroleum oils up to 350°F.

Temperature Range
Standard Compound: -25° to +300°F

Hardness (Shore A): 40 to 90.

Features: With excellent resistance to hot oil, automatic transmission and Type A power steering fluids, the greatest use for Polyacrylate is found in automobile manufacture, where O-rings of this material are employed to seal components of automatic transmission and power steering systems.

Highly resistant to sunlight and ozone degradation, Polyacrylate also features an enhanced ability to resist flex cracking.

Limitations: While resistance to hot air aging is superior to Nitrile, Polyacrylate strength, compression set, water resistance properties and low temperature capabilities are inferior to many other polymers. Polyacrylates are also not generally recommended for exposure to alcohol, glycols, alkalis, brake fluids, or to chlorinated or aromatic hydrocarbons.

 


 

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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.