Hi Fleetboy
I am a dealer for Best Gasket. They supply the graphtite rear main rope seals. Click on this link
http://www.bestgasket.com/about_our_products.asp to see the information. These are not the ones supplied by Victor Reinz or Felpro that are a non asbestos composite type. The rear main rope seals supplied by Best Gakset is a teflon rope impregnated with graphite. I have been selling these for years and have customer who say they are the best thing going and some who don't like them. I have come to find out that how it is installed makes or breaks the performance of any seal but if you would like the original asbestos rope seal, I should have them in stock. Contact me at bob

marxparts

or call 715-652-2405. Also see our website
www.marxparts.com for prices of the Best Gasket rope seals. Thanks Bob@marxparts