Needle Seat Assembly, 0.12mm ID Back Catalog number: 11-3889 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10584 Ceramic Plunger Assembly Price on request CTS-A121 Outlet Check Valve Price on request 11-4122 PTFE Diaphragm, LC-30AD/i-Series, 2/pk Price on request