Fuel System o-rings, seals, etc

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   So I am replacing the fuel filter for the pickup. It's the type that has the fuel pump + filter canister. There is a thick O-ring (seal is probably a better term).

What, if anything, should I use with the seal? Vaseline, Ultra Blue, nothing?

I have some Fuel Lube, a compound developed by Rolls Royce in the 1970's for jet engine fuel systems. It works great for metal-to-metal fuel system sealing, but I notice when I use it with rubber or other polymer seals it doesn't work so well.

The question really is more general in nature, however. The same question applies to sealing all rubber seals in fuel system components / connections.

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GranTorinoSport Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Admin of "The Org" Joined: 20-May-2003 Location: Seattle Status: Offline Points: 2287	Post Options Post Reply Quote GranTorinoSport Report Post Thanks(0) Quote Reply Topic: Fuel System o-rings, seals, etc Posted: 25-February-2011 at 7:50AM
	So I am replacing the fuel filter for the pickup. It's the type that has the fuel pump + filter canister. There is a thick O-ring (seal is probably a better term). What, if anything, should I use with the seal? Vaseline, Ultra Blue, nothing? I have some Fuel Lube, a compound developed by Rolls Royce in the 1970's for jet engine fuel systems. It works great for metal-to-metal fuel system sealing, but I notice when I use it with rubber or other polymer seals it doesn't work so well. The question really is more general in nature, however. The same question applies to sealing all rubber seals in fuel system components / connections.
	Scott Eklund Webmaster

Rockatansky Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 5846	Post Options Post Reply Quote Rockatansky Report Post Thanks(0) Quote Reply Posted: 25-February-2011 at 8:09AM
	you don't want RTV. vaseline or motor oil will work, just to lube the seal so it snugs up nice & smooth

Blueoval76 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Member of the Stroker Club Joined: 20-February-2010 Location: Sussex WI Status: Offline Points: 698	Post Options Post Reply Quote Blueoval76 Report Post Thanks(0) Quote Reply Posted: 25-February-2011 at 8:13AM
	X2 A grease usually works best on an O ring/rubber seal.
	68 Galaxie Wagon 390/auto/2.70 03 Bonneville some mods