Needle Seat Assembly, 0.12mm ID Back Catalog number: 11-3889 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10475-1 Sapphire Plunger Price on request CTS-A11342 Tube Assembly, Transducer to Check Valve Price on request CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request