Description
Rietschle vacuum pumps have small spots where parts come together and need a perfect seal. This copper ring gasket, part number 420044, is made for exactly those places.
It is a small, flat ring of pure copper. When you tighten the bolts, the copper gets squeezed a little and fills every tiny gap. That stops oil from leaking and keeps the vacuum pulling hard.
These pumps run hard every day, and a good seal like this keeps them going strong for years.
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