Needle Seal (For pH 1-14, for operation up to 130 Back Catalog number: CTS-21089 Availability: In the manufacturer's stock Price on request - + Recommended CTS-2294-04 Plunger Seals, 4/pk Price on request PL7025350 MarvelXACT PLS 25µm x 350mm Price on request 11-4126 Plunger Seal and Back Up Ring Price on request