Needle Seat Back Catalog number: 11-2570 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10686 Needle Seal, Vespel® Price on request CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request CTS-A11145 Tube Assy, System Outlet, SDS Price on request