Needle Seal, PEEK™ SIL-20 Back Catalog number: CTS-11315 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-0621 Inlet Check Valve Cartridge Price on request CTS-10600 Check Valve Cartridge, 2/pk Price on request CTS-21129 Check Valve, Ti, Price on request