Easy Deck Filler Gasket

MoodySabre said:
One of these gaskets £3.95 plus more than that for postage! Outrageous.

Because they are flat then an O-ring won't do. Any cheap sources or suitable material for making one.?
TIA
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Buy some rubber gasket sheet and cut one or more, you can get a 500mm square sheet for not a lot of £

many of the suppliers offer a small sample for the cost of postage, these are normally about 100mm square and really useful
 
Buy some rubber gasket sheet and cut one or more, you can get a 500mm square sheet for not a lot of £

many of the suppliers offer a small sample for the cost of postage, these are normally about 100mm square and really useful
Click to expand...

Beat me to it .... at one time everyone and his dog used to cut own gaskets ....

Just to add to the pot : When a gasket splits or fails ... and you have a tube of gasket goo in the box ... this can be a temp fix.

Wipe oil round the other mating surface, apply goo to the item with or without gasket (some require the thickness of gasket to match thread depth) .... spreading the goo around. Lightly screw item in place.
The oil stops the goo sticking to the fixed mating surface so you can unscrew easily again. Once set - you can tighten a little more just to be sure - but hot hard tight.
 
Daverw said:
Buy some rubber gasket sheet and cut one or more, you can get a 500mm square sheet for not a lot of £

many of the suppliers offer a small sample for the cost of postage, these are normally about 100mm square and really useful
Click to expand...
That's the way to do it.

I recently needed new gaskets for my old Rotostay and a sheet of rubber and a sharp craft knife was all that was needed.
 
Daverw said:
Buy some rubber gasket sheet and cut one or more, you can get a 500mm square sheet for not a lot of £
Click to expand...

I've had a couple of small sheets of 2mm thick nitrile rubber on the boat for years - the stuff comes in handy for all sorts of uses. Not much left now!
 
If you form a good bed of sicaflex around the fitting then insert 3 thick pieces of cable ties at 120 degree spacing, push the filler down onto this & wipe excess away. ( a ring of tape on the deck first will stop it getting imbedded in the non slip), Leave until next visit. Then remove cable ties & tighten down on the set sica, which will have made its own washer. You may decide not to tighten further. That should form a good seal plus some will work down the threads into the deck GRP as well. One would not expect to remove the filler for a good while so no problem with sicaflex adhering & being difficult to release. Instead of sica one might have gasket blue available as an alternative which will seal & be easier to release.
 
Daydream believer said:
If you form a good bed of sicaflex around the fitting then insert 3 thick pieces of cable ties at 120 degree spacing, push the filler down onto this & wipe excess away. ( a ring of tape on the deck first will stop it getting imbedded in the non slip), Leave until next visit. Then remove cable ties & tighten down on the set sica, which will have made its own washer. You may decide not to tighten further. That should form a good seal plus some will work down the threads into the deck GRP as well. One would not expect to remove the filler for a good while so no problem with sicaflex adhering & being difficult to release. Instead of sica one might have gasket blue available as an alternative which will seal & be easier to release.
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Thanks Sam but the gasket goes inside the filler cap.
As someone said why not buy more than one so that's what I've done. New ones for fuel and water and a spare. Postage doesn't look so bad when you divide it by three!
 
Any ideas for repairing worn aluminium deck fillers. The threads on mine are worn such that the thread won't hold unless I remove the O rings. I'm trying to avoid replacing them which would be an absolute pain due to access problems below deck.
 
KAM said:
Any ideas for repairing worn aluminium deck fillers. The threads on mine are worn such that the thread won't hold unless I remove the O rings. I'm trying to avoid replacing them which would be an absolute pain due to access problems below deck.
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I cannot see any reason why Helicoils would not work in grp. Also there are thread inserts designed for the job with very coarse outer threads.
 
Save yourself any hassle and just pay up - it's no more of a rip off than anything else in the boating world. We've got a canal chandler quite close who sell such things much cheaper though. I wouldn't bother buying several for future use as I wouldn't be able to find it when needed.
 
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