This is a complete Buna seal and gasket kit for Leybold Sogevac SV40 and SV65 vacuum pumps . It is designed for light maintenance, sometimes called a minor overhaul. The kit includes O-rings, shaft seals, copper crush gaskets, valve seals, and other sealing components . All rubber parts are made from Buna material (nitrile rubber), which is known for its excellent resistance to oil and wear . It replaces OEM part number 97197252 and cross-references to 23L-SV40/65-S
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