Ernest,
Sorry if my response sounded kurt.  It wasn't meant to be.  I've never
had my calipers or master cylinders apart and I just don't know exactly
what's inside or what material the seals are made from.  Maybe someone
else knows, or I'll check with Cleveland and see if they can tell me.
Since my brakes are Cleveland, the o-rings may be made of a different
material from yours.  Supposedly, Mobile 1 ATF is the same as the Mobile
1, except it has been colored to resemble ATF.  If that's true, and
considering that Mobile 1 is compatible with the seals and o-rings used
in automobile engines, then it would really surprise me if it wasn't
compatible with the brake o-rings too.  I need to do some more digging
here.

Mark

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ernest Christley
Sent: Tuesday, December 06, 2005 3:28 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Brake Fire Photo

Mark R Steitle wrote:

>The o-rings, or whatever is in the calipers and/or brake cylinders.
>  
>
8*)  I mean...What are the seals made of that they are compatible?

Matco brakes use BunaN seals (I'm pretty sure I'm remembering that
correctly), but I don't think that is a universal material.  Mine are
brand new, and I don't fancy ripping them apart to replace brand new
seals.  Matco recommends the flammible stuff, or the 83282A (which I
think will be good enough).

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