This Buna O-ring (Part# 050227) creates a tight, reliable seal inside your Kinney rotary piston vacuum pump. Measuring 53.57 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 KT150C, KT300C, KT500C, KT300D, KT500D, KC5, KC8, KC15, KTC90, and KTC112 . It is also a key component in factory maintenance kits .
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