What type of Teflon for headers?

[Jerry Stebbins]

Bob, we use, and sell the McMaster -Carr Teflon Part No.52365K73. Has 1/16 in. wall (Heavy Wall ) and 1/2 in. id. Had a little longer replacement time with this than the solid color--no apparent reason, since both are rated exactly the same. Temp Range :-400deg. to + 500 deg F. Maybe less heat retention with the translucent.
Jerry
  ----- Original Message ----- 
  From: Bob Kane 
  To: nsrca 
  Sent: Saturday, September 13, 2003 7:55 PM
  Subject: What type of Teflon for headers?


  I just replaced the umpteenth Teflon header on my plane, this one after 9 flights. The headers are made from PTFE tubing purchsed from McMaster-Carr. For grins I purchased blue tubing to match my plane. The failure seems to be caused by the header rotating in the teflon, eroding the inside until it fails. I am using a header brace, and I add a split piece of teflon to protect the header from the spring clamp clamp

  Is there a certain type of teflon with higher abrasion resistance that what I am using? Is the colored teflon weaker than the standard milky-white teflon? Anybody else suffer from this problem? Thanks.


  Bob Kane
  getterflash at yahoo.com


------------------------------------------------------------------------------
  Do you Yahoo!?
  Yahoo! SiteBuilder - Free, easy-to-use web site design software
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20030914/81a68464/attachment.html