Plunger Seal Back Catalog number: CTS-2294 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3321 Wash Seal Gasket, 6/pk Price on request CTS-10772 Pump Seals, Low Pressure Price on request CTS-11141 ACQUITY SM Performance Maintenance Kit, 700005236 Price on request