bigal.nz 59 Posted June 4, 2022 Share Posted June 4, 2022 Long story (wont bore you with the details) but I need to rebed the new fuel filler (Diesel). Butyl seems to be a favourite - except for fuel fillers (because it breaks down the butyl when spilt). Havent foumnd a clear answer on whats best for a fuel filler - Sika or Silicone seem to be an option.....anyone done this before? Thanks Quote Link to post Share on other sites
CarpeDiem 419 Posted June 4, 2022 Share Posted June 4, 2022 I have never seen a surface mating fuel filter without an o-ring or even heard of using a sealant except in an emergency. What do you have exactly? Any photos? Quote Link to post Share on other sites
bigal.nz 59 Posted June 4, 2022 Author Share Posted June 4, 2022 This is on the transom. As you can see the neck sits proud of the deck - ordinarily this would be a pain, but because of the placement of it, it will never cause a trip hazard. I felt that the proud neck also offers some protection against water ingress - those flush fillers are fine - but you are relying on the rubber ring in the cap to stop water getting in. Anyway when I took this one off - there was no gasket (this was a late 80s design and the filler had probably never been off. Looks like silicone *might* have been what was used and to be fair it had lasted well with no signs of leaking - but wondered what the modern solution is these days. Quote Link to post Share on other sites
CarpeDiem 419 Posted June 4, 2022 Share Posted June 4, 2022 Oh filler .. Fark I read, filter, sorry... Nitrile Rubber. Cut it to shape and use leather hole punch for the screw holes. I would use butyl tape on the very inside 3mm of the gasket ring as a last defense against water ingress, and use a cut to size nitrile gasket for the rest. Quote Link to post Share on other sites
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