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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

Chloroprene Rubber (CR)

Chloroprene, also known as Neoprene, was the first synthetic rubber developed commercially and exhibits generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range.

Heat resistance
• Up to approximately 121°C (250°F)

Cold flexibility
• Down to approximately -40°C (-40°F)

Chemical resistance
• Paraffin base mineral oil with low DPI, e.g. ASTM oil No. 1
• Silicone oil and grease
• Water and water solvents at low temperatures
• Refrigerants
• Ammonia
• Carbon dioxide
• Improved ozone, weathering and aging resistance compared with NBR

Limited compatibility
• Naphthalene based mineral oil (IRM 902 and IRM 903 oils)
• Low molecular aliphatic hydrocarbons (propane, butane, fuel)
• Glycol based brake fluids.

Not compatible with
• Aromatic hydrocarbons (benzene)
• Chlorinated hydrocarbons (trichloroethylene)
• Polar solvents (ketones, esters, ethers, acetones)



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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