comparison pic of rebuilt/original calipers

[Konstantin Bogach]

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I just saw mentioning of Syl-Glide grease.  First, I did not know that it is silicone based. And second, I just checked
compatibility of EPDM rubber with silicone grease and ... bingo!  It is what should be used.  Plus, cheap Buna-N grease seal
(from Chicago Rawhide) for e-brake cam is also compatible with silicone gease.

Check the following link:

 http://www.efunda.com/DesignStandards/oring/oring_chemical.cfm?SM=none&SC=Silicone%20Grease#mat

Konstantin Bogach.

Konstantin Bogach wrote:

> Konstantin Bogach wrote:
>
> > Brett,
> >
> > I don't know whether you saw my quest for right o-ring on threaded shaft (seals brake fluid from e-brake cavity) but
> > if you know what to use, please, let me know.  I used EPDM o-ring (ethylen propylen).  It is has the best resistance
> > to brake fluids but I could not find any info how it is compatible with synthetic grease like Valvoline SynPower which
> > I used in e-breake cavity.  I left one o-ring in the grease for experiment and it swelled a lot.  I will watch for a
> > leak from e-brake mechanism.
> >
> > Konstantin Bogach.
> > P.S. Chicago Rawhide is a good source for double lip grease seal for e-brake.
> >
> > >
> > >
> > >
> > > From: Brett Dikeman <brett at cloud9.net>
> > > As promised:
> > >
> > > Well, off to find supplies...orings for the ebrake shafts, cheap
> > > needle nose pliers to file down to the get the ring out, sandblasting
> > > media and some sort of tough paint(NO, not red :-)  ...
> > >
> > > Brett
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