<VV> Viton since 1958

[jvhroberts at aol.com]

I'm having trouble finding out what was used on the SRBs, but I don't think it was Viton. For one thing, Viton performs well at fairly low temps, like -40ºF.
 

 

John Roberts
 

 

-----Original Message-----
From: Bill Hubbell via VirtualVairs <virtualvairs at corvair.org>
To: BBRT <chsadek at comcast.net>
Cc: <virtualvairs at corvair.org> <virtualvairs at corvair.org>
Sent: Tue, Jun 30, 2015 4:21 pm
Subject: Re: <VV> Viton since 1958


They don't work well on frozen rocket boosters either.....

Bill

On Jun 30,
2015, at 4:10 PM, BBRT via VirtualVairs <virtualvairs at corvair.org>
wrote:

FYI... O-rings wre invented in 1936..according to a web site.  Haven't
found when Viton was made into o-rings, but the following may surprise
folks.

Authentic Viton®
Insist On the Best

Viton® was introduced in 1958 and
ever since scientists and engineers have relied onDuPontT Viton® for its
superior performance and unique properties. However, DuPont is not the only
company that manufactures FKM products. Many people in the industry incorrectly
refer to any and all FKM elastomers as Viton®. Products that are not made from
100% virgin DuPontT Viton® may fall short of the expected performance levels
afforded by the stringent quality standards DuPont has set for Viton®, which is
manufactured at ISO 9002 registered facilities worldwide.

BTW, Viton is not
good when frozen..nor is rubber, for that matter... Years ago, I was told Viton
o-rings came on the market in the mid-60's. Can't verify.

Chuck
S
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