Plunger Seal Back Catalog number: CTS-21347 Availability: In the manufacturer's stock Price on request - + Recommended 11-4073 LC-30AD Plunger Holder Assembly, UHP2 (w/Diaphragm Price on request CTS-0038 Tube, Right Inlet Pigtail Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request