This is a vacuum pump rebuild kit for the USA Lab UVP Vacuum Pumps.Click here for exploded view of parts (21, 34, 45)    Packing ListITEMQTYPart NumberDisplacement valve 1PN 320240101Back vane2PN 320100204Gas ball valve head1PN 311150103Anti-suckback plate1PN 320510101Exhaust port paper board1PN 320200101Coupling element 1PN 320050103Fore rotary vane2PN 320100121Matke filter1PN 320340101Oil sight1 PN 320170101Sight glass washer 1PN 320190101Motor paper washer1PN 320220101Front gasket1PN 320230101Front gasket1PN 320210101Seal1PN 300280602Seal 1PN 300280902Seal1PN 300281601Spring1PN 320110302Spring1PN 320110205Spring1PN 310080301Rotary vane spring5PN 320110104O-ring 2PN 300310070O-ring 1 PN 300310072O-ring 1PN 300310073O-ring 1PN 300310074O-ring 1PN 320160101O-ring 2PN 300310081O-ring 1PN 300310137Housing O-ring 1PN 300310079     For Technical Support, Questions, or Other Issues Please Email or Call Us!