mike gruenwald

Is there anything out there that has properties similar to silicone sealant (in a glow fuel system), but is gasoline proof?

Truckracer

My Feedback: (19)

What are you trying to seal? Fuel system, exhaust, or something else?

Rcpilot

My Feedback: (78)

RTV copper silicone in a tube. I don't think you can immerse it in gas for extended periods of time, but it's good for carb gaskets and muffler gaskets.

Mike Dooley/RCS

I would recommend a 2 cycle crankcase sealant such as Permatex Motoseal, Hondabond or any comparable product available from a good motorcycle shop.
Thanks,

arobatx

Neoprene can be submersed in Gasoline for very long periods of time without breaking down. And there is such a thing as Neoprene Sealant, that can be purchased in either one or two part (mix) containers ranging in quantities, and not terribly expensive. There are also flexible adhesives designed to repair neoprene, I believe one is called aquaseal, but I cannot speak confidently about this product being submersed in gasoline. I guess this all depends on what exactly you are wanting to do?

-for gasoline tubing in tanks and to feed the engine, I don't believe neoprene can be beat
-for a sealant around the exterior of tank stoppers, muffler gaskets, or whatever you might dream up, the Permatex Ultra Copper is good, and readily available. Neoprene Sealant would work, but definitely not as readily available.
-for fuel/gas proofing surfaces like firewalls...etc, your standard polyester or epoxy based finishing resins work great

Chad

Antique

My Feedback: (4)

G38 crankcases have no gasket, are sealed with some grey stuff...I think Three Bond 1104 is the same thing, it works on cases with no gasket and never leaks...It's a thick grey liquid that really sticks and never gets brittle...

mmattockx

As Mike noted, you can use any of the Hondabond/Yamabond/Kawabond case sealants for motorcycle cases. They are all very similar and perform very well when used properly. This stuff sounds the same again. The only trick is to be FANATICAL about cleaning the mating surfaces before sealing it up and letting the material cure adequately before exposing it to the gasoline.


Mark

mike gruenwald

I am looking for something that wouldn't degrade if submerged in gas.

arobatx

Can you tell us more? Perhaps that will help us help you

Tired Old Man

My Feedback: (1)

In that case contact a full scale aircraft supply that deals in "wet wing" aircraft repair parts.

Truckracer

My Feedback: (19)

Ya beat me to it!

Kweasel

My Feedback: (29)

Some mfgs have switched from RTV type sealants to Loctite 515 or 518 for sealing case halves. The only rubberized sealant that I have found that is unaffected by petroleum is PRC "pro seal" used in aircraft.

mike gruenwald

This post was started by fzr1000, not me. There is an error in the system, every thread or post started by or contributed to by fzr1000 has been credited to me.

JDLearjet

You can use AC240B2 or AC240B1/2. this is manufactured by Advanced Chemistry & technology. It, or the PRC equivalent is available at any aviation (1:1 Aircraft) supply house. Or you can contact Aviall in Dallas. We use this sealant for all immersable aviation fuel. It works excellent for regular gas & oil as well.