Small square of rubber wanted for gasket

Nov 25, 2006 12 Replies

Need a piece of rubber about 6 inches square and 3mm to 4mm, to go under a blanking plate to seal off a flange.



Nearest thing I have here is a mouse mat, but rubber looks a little too soft, might even be porous.



Anyone got a piece lying around?



Cheers



Lionel


I could offer you 3mm thick rubber. But one side has a fabric-structure (no fabric inside). If that helps.

Nick

If you could get away with a thinner material how about ringing you local tyre mart and scrounging a scrap inner tube. As long as its 2 inch or larger diameter you can probably get the sheet size you need out of it.

You need 'Insertion rubber' from an engineers' merchants. I don't think I have any at the moment.

Cheers Tim

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Lionel,

I have some 5mm if that is not too thick ? I also have some 1.5mm somewhere but cannot imediately locate it (but it has small dimples on one side)

AWEM

You could try using thick pond liner - ask for a sample from your local garden centre or World of Water...

Wonder if there's a car floor mat that isn't too embossed you could use?

Can't think of anything else.

Wayne...

Must it be rubber, or would a steam grade of Klingerite (much stiffer) do the job?

Mark Rand RTFM

Hello Andrew,

5mm should do, its an inspection cover on end of the tub on a vibratory finishing machine.

Just had it re-lined, they left the cover off to drill the drain holes in one end.

Original seal was about 1.5mm and leaked, so a thicker seal might compress better to make the seal.

Thanks for other replies.

Cheers

Lionel

I very much doubt it. If the surfaces are in good condition then generally the thinner the gasket the better. Rubber tends to distort and squeeze out of the gap, particularly if overtightened. A smear of ordinary clear silicone sealant from your local diy shop will prevent any leaks. In fact you could just use that without a gasket. Apply a thin bead, nip the cover up lightly, leave a few hours for the silicone to cure and harden and then tighten a tad more.

-- Dave Baker Puma Race Engines

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Thanks Nick,

Andrew has offered to send some 5mm, and I have took up his offer earlier.

Usually have some rubber here, but only 40mm wide strips at the moment.

Lionel

I scrounged a bit from our local Timpsons shoe repairer, he had a big sheet he just cut a chunk from.

Piece of lino? or a coupla' thicknesses of pond liner?

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