Sapphire Plunger w/Holder Back Catalog number: 11-3795 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2588 Main Piston Seal Price on request 11-2587 Piston Seal Wash Seal/Priming Valve Seal Price on request CTS-10548 Gold Plunger Seal, Analytical Heads Price on request