Plunger Seal Back Catalog number: CTS-2294 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-5531-05 Solvent Bottle Filter, 5/pk Price on request CTS-11265 Kit S200 Standard Pump Seals Price on request 11-4181 Seal Wash (0.0787 ID, Fixed), 2/pk Price on request