fuel gauge gasket/sealant material

[mattnj]

New fuel sender (stainless) to screw down to a 140l plastic tank (5 screw hole type)

What sealant should I be using that's diesel safe?

 

[garvellachs]

Cork gasket? Any sealant is trouble when you want to remove it next.

 

[VicS]

New fuel sender (stainless) to screw down to a 140l plastic tank (5 screw hole type)

What sealant should I be using that's diesel safe?

Nitrile rubber is the material for a gasket I believe.

 

[David2452]

Gasket material (nitrile, cork, whatever) is far less important on a plastic tank than having the correct support from below, i.e. a rigid sandwich, screwing anything into something other than a welded boss on a plastic tank is frought with problems.

 

[RichardS]

I bought a tube of Hylomar Blue for exactly the same application with a nitrile gasket but on a metal tank. The guy at the firm who sold me the new sealing kit said not to use sealent. I gave the gasket a smear of silicone grease and nothing else. 18 months later it's still fine and has never leaked.

Hylomar Blue is still unopened.

Richard

 

[prv]

I made an access hatch about a foot square. It's bolted down onto a gasket cut from a sheet of nitrile from eBay, and there hasn't been the slightest weep from that four feet of joint. No liquid sealant involved.

Pete

 

[jwilson]

What works on rigid plastic tanks and metal tanks does not necessarily work on thin bendy plastic tanks. I spent two years trying to totally seal a tank hole: in the end the solution (now several years and still so far OK) was cork/nitrile gasket, with Hylomar red round gasket and Hylomar Blue on screw threads.

 

[mattnj]

It's part of the original tank. I'm just replacing sender. Guess I need to source some rubber

 

[Ripster]

What works on rigid plastic tanks and metal tanks does not necessarily work on thin bendy plastic tanks. I spent two years trying to totally seal a tank hole: in the end the solution (now several years and still so far OK) was cork/nitrile gasket, with Hylomar red round gasket and Hylomar Blue on screw threads.

Yep - I had a similar issue after removing a poorly located fuel sender. Plate with a nitrile/cork gasket and blue hylomar smeared on contact surfaces and around screw points - no leaks after a year.

 

[rob2]

If you source your rubber sheet from a rubber merchant such as Portmere Rubber in Southampton, they have all the tools to cut a perfectly circular gasket and punch the screw holes in minutes.

http://www.portmererubber.co.uk/content/view/21/33/

Rob.

 

[rob2]

Just remembered they call themselves Rubber Factors - useful for a Google search for your nearest one.

Rob.