Value-Added Services
Enter keywords or manufacturers

Quad Rings®
Oil Seals
Mechanical Seals
Braided Packings
Joint Sealant
Lathe Cuts
Hydraulic Seals
Pneumatic Seals
Thread Seals
Spliced O-Rings
Backup Rings
Rubber Products
Other Products
H-Seal (Metal Seal)
Custom Metal Fabrication

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

Perfluoroelastomer (FFKM)

The name "perfluoroelastomer" is somewhat misleading. An actual perfluorinated material with a high molecular weight is polytetrafluoroethylene or PTFE. The molecular carbon chain is shielded by the chemical inertness of the large bonded fluorine atoms. Perfluoroelastomer is produced by the copolymerization of tetrafluoroethylene (TFE) and a perfluorinated ether, e.g. perfluoromethylvinylether (PMVE).

The differing resistance to volume swell of the different perfluoroelastomers is due to the perfluorinated ether element, where the side-chain can consist of up to four perfluorinated carbon atoms. The extraordinary chemical resistance is partly due to the fluorine atoms shielding the carbon chain, and partially due to the vulcanization system.

Heat resistance
• 232°C to 300°C (450°F to 590°F) depending on compound

Cold flexibility
• -18°C to -26°C (0°F to -15°F)

Chemical resistance
• Aliphatic and aromatic hydrocarbons
• Chlorinated hydrocarbons
• Polarsolvents (acetone,methylethylketone, ethylacetate, diethylether and dioxane)
• Inorganic and organic acids
• Water and steam
• High vacuum with minimal loss in weight

Not compatible with
• Fluorinated refrigerants (R11, 12, 13, 113, 114, etc.)



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.


| Seals | Backup Rings | Rubber Products | Other Products | Adhesives | Lubricants | PermaGlyde | Custom Metal Fabrication |
| Home | About All Seals | Product Search | Request A Quote | Contact | General Information | Glossary | Site Map | Request for Quote |
We serve a wide range of industries...
When you have a sealing problem, contact us for the most effective solution.
Copyright © 2009 All Seals Inc. The Sealing Specialists. All rights reserved.
Do you have an upgrade or comment about this site? Please contact our Information desk.
Site created by Web Work Connects Group - Web Development & Search Engines Marketing.
Now Accepting