Sapphire Plunger Back Catalog number: CTS-11297 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2591 Needle Guide Price on request CTS-10759 Piston Seal Backup Ring Price on request 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request