Fuel filler sealant

[Dave 2]

Hi what’s the best sealant to use when fitting a deck fuel filler. Cheers 

[Alan de Enfield]

8 minutes ago, Dave 2 said:

Hi what’s the best sealant to use when fitting a deck fuel filler. Cheers 

 

Are you talking about a steel narrowboat ?

 

Most (all ?) are welded in place.

 

 

 

[Tracy D'arth]

Presuming this is a flanged deck fitting with the flush screw plug in the middle.  I use PU18 polyurethane sealer/adhesive with great success.

[ditchcrawler]

34 minutes ago, Alan de Enfield said:

 

Are you talking about a steel narrowboat ?

 

Most (all ?) are welded in place.

 

 

 

Mine isnt 

[Tracy D'arth]

Nor mine.

 

Is this the type of filler?   PU18 then.

42 minutes ago, ditchcrawler said:

Mine isnt 

 

[Dave 2]

Hi sorry I meant it’s for a stainless steel flange fitting cheers 

[mrsmelly]

48 minutes ago, Tracy D'arth said:

Nor mine.

 

Is this the type of filler?   PU18 then.

 

They are terrible bits of kit, built in water entry point. The upstand threaded type in steel with a steel threaded cap are far better innitt.

[dor]

9 minutes ago, mrsmelly said:

They are terrible bits of kit, built in water entry point. The upstand threaded type in steel with a steel threaded cap are far better innitt.

When I went to buy a new gasket for mine (they swell up with diesel and go soft) my local chandler recommended an O-ring.  Works a treat - no leaks and lasts for years.

[mrsmelly]

6 minutes ago, dor said:

When I went to buy a new gasket for mine (they swell up with diesel and go soft) my local chandler recommended an O-ring.  Works a treat - no leaks and lasts for years.

Deffo O rings are better. They have two problems though. they leak after a time were they are mated up against the hull and indeed through the filler hole. The steel upright ones dont look as pretty but do a better maintenance free job. Ive had both types and whilst I dont buy a boat with the filler type in mind I am always pleased when its the steel threaded upright type ?

[ditchcrawler]

So where is this stainless steel flange and how does it mate

[Alan de Enfield]

11 minutes ago, ditchcrawler said:

So where is this stainless steel flange and how does it mate

Probably looks for a stainless steel flange of the opposite sex (although, you never know !)

[ditchcrawler]

12 minutes ago, Alan de Enfield said:

Probably looks for a stainless steel flange of the opposite sex (although, you never know !)

Flanges normally mate face to face not by insertion.  A gasket is normally all thats needed between the faces