Certain elastomers can make O-rings & rubber seals expensive with a long lead time. The O-ring Store provides Viton Extreme ETP in 3 Weeks or less at a great price.
When someone looks at an
O-ring
or molded rubber seal, they usually don’t think it can cost upwards to
several hundred dollars apiece. Most of the time, general-purpose seals
are only a few cents or dollars apiece. The cost of the O-ring or rubber
seal is greatly affected by the elastomer used to make it. The most
popular and least expensive elastomer is nitrile (Buna). More than fifty
percent of sealing needs can be met using nitrile. While every seal
serves the same purpose (to block the passage of liquid or gas) they are
all exposed to different environments. Many demanding industries like
oil field machinery and chemical processing can expose rubber seals to
extreme temperatures and caustic fluids on a daily basis. Sometimes,
rubber seals made from specialty elastomers are the only thing that will
withstand those applications. You certainly wouldn’t want to use the
same O-ring you put in your kitchen sink as you would four miles below
the earth’s surface in a drill bit.
Rubber seals made from perfluoroelastomers offer the best resistance to high temperatures and chemicals…but at a high cost.
Rubber seals made from perfluoroelastomers can resist continuous
service temperatures of up to 600°F. There is no other elastomeric
material that can offer such resistance. Standard elastomers can usually
seal up to 400°F. Pefluoroelastomers also have inherent reisistance to
aggressive chemicals. O-rings and molded rubber seals made from
perfluoroelastomers resist more chemicals than seals made from any other
elastomer. As you may have guessed, any seal made from a
perfluoroelastomer will cost a significant amount. Unless you’re willing
to shell out the big bucks, you might want to consider a viable
alternative.
The O-ring Store's Domestic and Import Viton® Extreme (ETP) offers a less expensive alternative to perfluoroelastomers at a much reduced lead time, 3 weeks or less.
The O-ring Store's compound, CV75, is made from a Viton® Extreme (ETP)
polymer. While that material can only be used in service temperatures up
to 400°F, it offers reliable service similar to a perfluorelastomer in
aggressive chemicals, but at a fraction of the cost. O-rings and molded
rubber seals made from perfluoroelastomer can cost up to six times more
than those made from Viton® ETP. For more information on The o-ring Store’s Viton®
ETP seals in over 1,000 standard and metric sizes,
email us or call (208) 413-6377 Monday - Friday 8:00am - 3:00pm.
Silicone O-Rings 
