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Bostec's revolutionary H-Seal are the most reliable, flexible and cost effective metal seals in existence. H-Seal™ provide an ultra high vacuum (UHV) seal that is particle free, impermeable to moisture and are interchangeable with elastomeric O-rings. Learn more about H-Seal ...

Guaranteed 100% reliable
Interchangeable with Elastomeric O-Rings
Cryogenic to 500+° C
Sizes from 0.300" to 14"
Available in Nickel, Aluminum, Copper



 
 

All Seals Incorporated
The Sealing Specialists
2110 S. Yale Street
Santa Ana, CA 92704
Phone: (714) 556-4931
Fax: (714) 557-3257

SEALS › O-Rings

Ethylene Propylene Rubber (EPM, EPDM)

EPM is a copolymer of ethylene and propylene. Ethylene¬propylene-diene rubber is produced using a third monomer and is particularly useful when sealing phos¬phate-ester hydraulic fluids and in brake systems that use fluids having a glycol base.

Heat resistance
• Up to 150°C (302°F) (max. 204°C (400°F)) in water and/or steam)

Cold flexibility
• Down to approximately -57°C (-70°F)

Chemical resistance
• Hot water and steam up to 149°C (300°F) with special compounds up to 204°C (400°F)
• Glycol based brake fluids up to 149°C (300°F)
• Many organic and inorganic acids
• Cleaning agents, soda and potassium alkalis
• Phosphate-ester based hydraulic fluids (HFD-R)
• Silicone oil and grease
• Many polar solvents (alcohols, ketones, esters)
• Ozone, aging and weather resistant

Not compatible with
• Mineral oil products (oils, greases and fuels)

 

 

 

For immediate assistance - Call 800-553-5054
We can supply custom molded o-ring designs in any material and in virtually any shape or size. Send your drawings for quote or call to discuss product or material design perimeters with our engineering department.

 

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