PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4134 Rotor Seal & Pod Repair Kit, Vespel, 3-Groove for Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-21045 SUS Tubing A Price on request