Sapphire Plunger Back Catalog number: CTS-3102 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1603 Seal, Wash Price on request CTS-21012 Compression Screws & Ferrules, 1/16", SS, 5/pk Price on request 11-4133 Gold Plunger Seal Price on request