Piston Seal Backup Ring Back Catalog number: CTS-10759 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request CTS-2061 Plunger Seal, Gold Price on request CTS-21171 Rotor Seal, H-Assy, 6 Port 2-Position Price on request