PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1597 Piston Assembly, TZP Price on request 11-1601 Seal, GFP, High Pressure, Piston Price on request CTS-A159 Inlet Check Valve Price on request