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Plunger Seat Assembly (Replacement Parts for Cutting Attachment) INCLUDES: ✔️2pcs O-ring = Parts number 10 & 19 ✔️Plunger Stud = Parts number 11 & 20 ✔️Spring = Parts number 22 ✔️Seat Assembly = Parts number 21 Please Refer measurements Also available: ✔️Diaphragm ✔️Oxygen Regulator ✔️Acetylene Regulator ✔️ Outlet Connector ✔️Valve seat ✔️Victor Nozzle Gasket ✔️Head Mixer ✔️O-ring Repair Kit ✔️Gas Valve Stem If you need replacement parts or accessories for your primary or secondary regulator, we've likely got what you're looking for. If you need a part that is not listed below, feel free to contact us and we'll help you find what you need.