Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-10597 Wash Tube Seal Kit, 4/pk Price on request 11-3601 ACQUITY H SM-FTN Performance Main. Kit,700005236 n Price on request 11-4152 Tubing D-L Assembly Price on request