Compression Screw, SS Back Catalog number: CTS-5313 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request 11-3832 Wash Seal, PE, 1220, 1260, 1290 Price on request CTS-11265 Kit S200 Standard Pump Seals Price on request