Seal, Wash Back Catalog number: 11-1603 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A138 Ceramic Plunger Assembly Price on request CTS-A11372 Tube Assy, Transducer to Check Valve, I2V Price on request CTS-10988 2690/2695 Performance Maintenance Kit Price on request