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Old 17-01-2010, 18:53   #1
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Permatex 'Right Stuff ' Gasket Maker - Any Opinions?

Just dismantled my aircon water pump">raw water pump because it was dripping when not running.

It has a paper gasket which appears to be the cause of the leak.

I'm thinking of cleaning both faces and applying this stuff instead of making another paper gasket.

http://www.permatex.com/products/Aut...sket_Maker.htm

Is this a dumb idea?
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Old 17-01-2010, 19:43   #2
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Yes, it’s a dumb idea for several reasons:
The gasket is a specific thickness to give the impeller the correct endplay. You can easily duplicate this with a similar gasket material or paper but you can’t do it with stuff that has no crush.
Also, when you use a gasket, you don’t get sticky gunk all over everything, including the impeller. Make a couple of gaskets and keep a spare handy, it’s a lot easier than scraping old sealer off the machined surfaces.
If the mating surfaces are pitted beyond hope, then disregard the above. In that case you may get a little more service out of the pump if you use silicone. (Sparingly)

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Old 17-01-2010, 20:27   #3
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Quote:
Originally Posted by neelie View Post
Just dismantled my aircon raw water pump because it was dripping when not running.

It has a paper gasket which appears to be the cause of the leak.

I'm thinking of cleaning both faces and applying this stuff instead of making another paper gasket.

http://www.permatex.com/products/Aut...sket_Maker.htm

Is this a dumb idea?
Depends on the type of pump. If it's low pressure like a car, and the gasket is paper thin, then I'd go with http://www.permatex.com/products/Aut..._2_Sealant.htm

But if it's a positive displacement pump, you'll need a good strong surface with the proper gasket.
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Old 17-01-2010, 21:57   #4
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If the surfaces are damaged, use a new paper gasket PLUS Permatex gasket dressing. This dressing helps the gasket, doesn't replace it. It costs surprisingly much but works very well.

cheers,
Nick.
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