PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2529 Screw, Comp., 10-32, 304SS, (Gold-Plated), 10/pk Price on request 11-4048 PEEK™ Needle Seal, SIL-30AC, SIL-30ACMP Price on request CTS-10788-5 Needle Wash Frit, 5/pk Price on request