Needle Seal, SIL-30AC, SIL-30ACMP Back Catalog number: 11-4052 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-21480 Check Valve, Cartridge Price on request CTS-11265 Kit S200 Standard Pump Seals Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request