A/C O-ring sealant?

Kent McLean kentmclean at mindspring.com
Sat Aug 12 11:15:53 EDT 2006

Dave C wrote:
> There is a leaking seal in my A/C system, 89 Audi 100 and a new seal is
> apparently not available.  This seal is an irregular shaped O-ring between
> the two halves of the manifold.  

I'll give you my backyard mechanic thoughts, worth at least 2 cents.

- Does the o-ring fit in a groove?
- Do you mean "irregular shape" in that it doesn't look like an "o" when
   lying flat, but the cross section is still round (or squared)?

If "yes" to those two questions, then I'd find an A/C-compatible o-ring
of the correct size/length/circumference and with the correct cross
section, and insert it into the groove.  The o-ring should be thin and
flexible enough to shape itself to the irregular shape.

I'd bring to original o-ring to an A/C place to see what they have
that would work.

Kent McLean
'94 100 S Avant, "Moody"
'89 200 TQ, "Bad Puppy" up in smoke

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