Hydraulic Cylinder Rebuild Packing Kit Seal Replacement Parts Kit PN#8D00051-17 NSN 5330-01-498-1120 Original application was a military M1022 Dolly set but this could work in other standard design cylinders with a 2″ Rod and a 3″ Cylinder Bore. Save $$$ here on this one. Save $$$$$ buying here L2A6 11740