Backup Seal Back Catalog number: CTS-2963 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10493 Check Valve Cartridge, 2/pk Price on request PS7050350 MarvelXACT™ PEEKsil™ 50µm ID x 350mm Price on request CTS-A159 Inlet Check Valve Price on request