Sapphire Plunger Back Catalog number: CTS-3102 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3889 Needle Seat Assembly, 0.12mm ID Price on request 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request CTS-2294-04 Plunger Seals, 4/pk Price on request