Seal, Wash Back Catalog number: 11-1603 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4052 Needle Seal, SIL-30AC, SIL-30ACMP Price on request CTS-11265 Kit S200 Standard Pump Seals Price on request CTS-21262 Needle, Uncoated 20 Series Price on request