This Buna O-ring (Part# 050245) creates a reliable seal inside your Kinney rotary piston vacuum pump. Measuring 110.72 mm inner diameter x 3.53 mm cross section, it is made of durable Buna-N (Nitrile) rubber. This O-ring fits many popular Kinney pump models including KT300C, KT500C, KT850C, KT300D, KT500D, and KT850D . It is also a key component in factory maintenance kits for these models .
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