e-brake question

[james accordino]

I used regular black o-rings.  That's what was in
there.  I think they may be nitrile?  The powder coat
guy also said "no way the powder coat will work, the
brake fluid will eat it right off".  Yeah, he knows
his product.  Maybe it's because I keep my brake fluid
inside the calipers.  I don't know if the o-ring is
swollen or whatever, and I don't feel like
disassembling a fully functional caliper to see.  If
it was wasted, the brake fluid will come out the cam
seal.  Absolutely, no doubt.  When or if I ever see
brake fluid there, or they stop functioning, or I lose
my mind I'll inspect them.

Jim Accordino

--- Konstantin Bogach <kbogach at comcast.net> wrote:
> James,
>
> did you change that small o-ring on threaded rod
> which seals e-brake
> cavity? What size did you use?  I found that the
> only rubber compatible
> with brake fluid is EPDM (ethylen propylen).  I can
> not find metric
> sizes of EPDM o-rings. Closest standard size is
> ID3/8'' W1/16'', but it
> is thinner.  By the way, because there is the
> grease on other side the
> o-ring this grease should be campatible with EPDM as
> well. Full
> synthetic without ester and petroleum oil additives
> should work.
> Can you comment on this?
>
> Konstantin Bogach.
> P.S. First c-clip took about 4h, second one - 5min.
> Impresive progress!
>


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