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-21567 PM Kit, Seal Wash for Binary Pump G4240A Price on request CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request 11-2525 1/4" Short Comp. Screw (Gold-Plated), 10/pk Price on request