In general, silicone is not compatible with petrol. There are, however, some silicone-based products that are specifically formulated to resist fuel. SS-300, a room temperature vulcanising silicone sealant, is a notable example.

PRC Rapid Seal® 682 is a flexible high-performace sealant intended for use in chemical storage tanks where will be exposure to a variety of chemicals such as gasoline, crude oil or ethanol.

What are the applications of petrol resistant sealant?

Is there some goop that isn't silicon that'll hold up? Does anyone know the name? Have used it? Trust it? Silicon does, but only for a very short while, then it breaks down. Turns to jelly. Please note that once the tank sealer has been applied you CANNOT re seal over as it will not adhere to itself. Conro Electronics is a leading supplier of materials and tools in the electronic manufacturing industry. Flexible high-performance sealant intended for use in chemical storage tanks where there will be exposure to a variety of chemicals such as gasoline, crude oil or ethanol

So yeah, now I think it leaks between the tap itself and the tank. The top of the tap is flat, where it bolts onto the tank is flat. There is an o-ring that goes around the gauze and between the tap and the tank.I tried plain silicon, but I knew the petrol would have its way with it. It chews through it pretty fast, so I don't want to use that. PRC Rapid Seal® 652 is a flexible high-performance sealant intended for use in chemical storage tanks where there will be exposure to a variety of chemicals such as gasoline, crude oil or ethanol. We’ll show you how to improve product reliability while increasing performance and lowering costs. Our team of technical support specialists will provide your company with dependable global supply, unrivalled efficiency, and superior technical support.