This is the Kinney Valve Deck Cover Gasket, Part# 808473. It is made specifically for the Kinney KT850C and KT850D rotary piston vacuum pumps . This gasket seals the cover on the valve deck. The valve deck is where the pump’s valves live. A good seal here prevents air leaks and loss of vacuum . This part is also a key component in Minor Maintenance Kits and Major Maintenance Kits for these pump models .
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