Piston, Ceramic Back Catalog number: CTS-21219 Availability: In the manufacturer's stock Price on request - + Recommended CTS-11282 1525 Performance Maintenance Kit Price on request 11-2587 Piston Seal Wash Seal/Priming Valve Seal Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request