Author Topic: 3 inch boiler build  (Read 2834 times)

Offline gary.a.ayres

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Re: 3 inch boiler build
« Reply #75 on: August 08, 2018, 06:35:16 AM »
Aha - yes, thanks Dan. That works.

It seems immediately obvious now that you have explained it!

gary

Offline gary.a.ayres

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Re: 3 inch boiler build
« Reply #76 on: August 14, 2018, 11:03:52 PM »
Hi -

I've been trying out Stag Wellseal this evening on a few fittings:

https://www.heritagesteamsupplies.co.uk/gasket-sheet-jointing/jointing-compounds/wellseal.html

It's transparent, dark brown, runny and very sticky and looks for all the world like something chocolatey which you might squeeze on to an ice cream from a plastic bottle. You clean any grease from the mating threads (I used acetone), then anoint them with the Wellseal. You then leave them apart for about 5 minutes while the Wellseal thickens up, after which you either add a bit more Wellseal (if required) or just screw them together. Apparently it never really sets, so it's easy to remove the fittings if required and clean it off with a solvent.

I must admit that the stuff inspires confidence - it's so damn sticky!  It gets right into the threads and it's hard to imagine it not making an effective seal. However, the proof of the pudding will be in the testing. If it doesn't work I'll try one of the various Loctites, but for now I remain hopeful.

gary