Ed / Paul / Ken:
I know you guy have been doing a lot of investigating into sources of specific teflon encapulated O-rings for the 13B.  In addition, you've come up with some good alternate sources for the purchase of other various O-rings for the 13B.  I've been trying to follow you guys and keep up with the thread, but I've only managed to get confused.  Would it be possible to summarize your findings and sources for the group.  That would be extremely helpful since I'm now ready to order these parts for my 20B!!!
Thank again for all your help and advise along the way!!
What a great group this is!!!
Sincerely,
Don Mitchell

I am going to defer to Ken and Ed on the part numbers and exact sizes 
is as they are further along they I am.

I will outline what we are talking about however.
There are four coolant sealing O-rings per rotor housing. 
These are about 11 inches in diameter. Two outer and two inner.
There are also four oil sealing O-rings per rotor. Two on each side of
the rotor proper. These are located on the flanks of the rotor. Two per side
and are about 5 inches in diameter.

Mazda uses various materials for these O-rings. We are in the process of
determining the part numbers for the much higher temperature (500 degrees F) and 
chemical tolerant teflon encapsulated silicon O-ring. This TES O-ring should make the
rotary more tolerant to temporary inadvertent overheating. In the past
this usually resulted in a coolant leak or an oil burning problem due to 
melted O-rings.

Paul Lamar
 
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