Grundfos pump gasket


Old 11-18-10, 01:38 PM
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Join Date: Jun 2009
Location: USA
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Grundfos pump gasket

My Grundfos circ pump gasket seems to be leaking. Can I use one of those "old fashioned" flat gaskets or do I need to get the "O" style that grundfos ships them with?


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Old 11-18-10, 02:08 PM
Join Date: Sep 2009
Location: U.S. Midwest
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Is it a flange gasket where a pipe connects to the pump? If a flange face is grooved for an O-ring, that's what you need to use.

You might try tightening the flange nuts slightly and see if that helps. You can open the pump connections and inspect the O-ring and see what's wrong, but best to have a replacement O-ring in hand or readily available before you do that.

Some Grundfos gaskets are available here: Grundfos Pumps , Pumps , Grundfos Cast Iron Pumps , Grundfos Bronze Pumps -
Old 11-19-10, 07:06 PM
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The O-Ring type gasket is ideal if the flange is groove for one but a flat gasket will work. Sometimes I've had to use both to get a seal.

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