Seal, Needle PEEK™ Back Catalog number: CTS-11435 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A121 Outlet Check Valve Price on request CTS-A11336-02 Cartridge, Intelligent Valve, 2/pk Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request