Face Seals, 4/pk Back Catalog number: CTS-10989 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21106 Seal Wash PM Kit Price on request CTS-10548 Gold Plunger Seal, Analytical Heads Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request