O-Ring, PTFE Back Catalog number: CTS-11092 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21164 Rotor Seal, 6 port, Rear Price on request CTS-10566 Alliance Head Plunger Seal Kit, 2/pk Price on request CTS-21347 Plunger Seal Price on request