Plunger Seal Back Catalog number: CTS-21347 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21015 Ferrule, 1/16", SS, 3/pk Price on request CTS-A157 Outlet Check Valve Price on request 11-2525 1/4" Short Comp. Screw (Gold-Plated), 10/pk Price on request