Black Plunger Seal Back Catalog number: CTS-6613 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1603 Seal, Wash Price on request CTS-21015 Ferrule, 1/16", SS, 3/pk Price on request CTS-10711 Alliance Head Plunger Seal Kit, Black, 2/pk Price on request