Plunger Seal Back Catalog number: CTS-21347 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request