flyrotary@lancaironline.net Mailing List Archive

I run with viton O rings as oil seals with Teflon coated silicon for the inner cooling "O" ring and stock outer coolant "O" rings. So far I have never had a failure with that set up.

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC

----- Original Message -----

From: Todd Bartrim

To: Rotary motors in aircraft

Sent: Saturday, July 17, 2004 3:12 PM

Subject: [FlyRotary] Re: Rotor seals

Tracy also carries all Viton O-rings in his rebuild kits. In our applications, I feel it is a necessity.

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of kenpowell@comcast.net
Sent: Saturday, July 17, 2004 8:19 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Rotor seals

Chuck Dumlap has been running a set of teflon coated rotor seals for about the last year and has not reported a problem. Viton seals should also be good for about 400 degrees. Mcmaster-Carr and Creavy carries these, but you have to have the exact dimensions.

http://www.creavey.com/

The proper oil O-ring sizes are:

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

Ken Powell