O-Ring, PTFE Back Catalog number: CTS-11092 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3883 Needle Assembly Price on request CTS-11121-02 Wash Seal, 2/pk Price on request 11-4048 PEEK™ Needle Seal, SIL-30AC, SIL-30ACMP Price on request