Subject: Teflon O ring sizes.
From: Rotary Engine
Date: 6/22/2005, 10:45 AM
To: AA-me


Paul,
  George (down under) posted a question about the diameter of the inner
oil
seal O-ring.......Creavy had it listed as 0.093" whereas the list I have
is 0.118".
 I may have missed the answer to the question........Which is correct ??
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2


> The proper oil O-ring sizes are:
>
> 0.093" section 4.68 inch ID
> 0.118" section 4.33 inch ID ????


There are two different sizes. Here is an old message on the subject.
It is easy to measure the size of the cast iron oil scrapper rings
and check.

------------------------------------------------------
I checked the installation of the oil O-rings with the new
sizes I got from Creavey. They worked perfectly and were
very easy to install. You will need a little O-ring lube
and a 2 by 8 to install them. They were also easy to remove
with no signs of distortion.

One of the secrets is if you reuse the old oil scraper rings
they must be spotlessly clean inside and out. Soak them
in carb cleaner for a few days. If you use new scraper rings
this will not be a problem of course.
The second thing to watch out for is don't nick the
rotor wall between the two scraper rings when you remove them.
Very very important!!

Hopefully we can talk Dave Lemon into stocking these custom size
teflon encap silicon oil O-rings. Everybody send a message to
Dave at Mazdatrix :-) As I said these can be the same or just a
little more than the stock oil O-rings from Mazda.

The proper sizes are:

0.093" section 4.68 inch ID
0.118" section 4.33 inch ID

I can vouch for the quality of the Creavey O-rings but some
of those water TES o-rings from Mcmaster Carr I have seen
are not as good. This is not to say they won't work. They just
don't look as good around the joints as Creavey O-rings.


Paul Lamar



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