PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21192 Cartridge, BioAcquity, I2V Price on request CTS-11366 Piston, High Pressure Price on request 11-2587 Piston Seal Wash Seal/Priming Valve Seal Price on request