Subject: Teflon O ring sizes.
From: Rotary Engine
Date: 6/23/2005, 8:36 PM
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 ????

Kelly,
I purchased the Mazda oil 'O' rings and checked the sizes.
The 0.118" is the correct size for the 4.33 " ID - as Paul correctly
detailed above.

My belief is that the info that Creavey has is a result of a typo in which
they transferred Paul's info to their own records - as all the other sizes
are, 0.093"  - this is the only odd one out.

I have contacted Creavey and ordered my "O" rings and asked them to amend
their records.

Also note there are two types of "O" rings one to 400 degrees F and one to
500 F. Select the latter one even if they quote on the 400F one, as they
initially did with me.
George ( down under)


I almost had the same misorder.
I believe the ones you want are the SIL/PFA o-rings good to 500F, you
should
specifically ask for them.

Oil O-rings
0.093 x 4.68
0.118 x 4.33

I believe Paul's numbers for the coolant O-rings worked out to be:

Inner Coolant O-rings
0.093 x 8.932

Outer Coolant O-rings
0.093 x 11.182

I ordered the coolant orings with 9.00 and 11.25 ID, they fit without
stretching
and had a bit of slack, I would get slightly smaller next time.

Cheers
Cary


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