Plunger Rinse Seal Back Catalog number: CTS-10583 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11091 ACQUITY BSM Performance Maintenance Kit Price on request CTS-10600 Check Valve Cartridge, 2/pk Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request