Craftsman makes a jack repair kit that is available at Sears. Blackhawk Parts and Lazzar's also make floor jack repair kits. These kits are sold on each company's website.
Sears and Craftsman are names mechanics have come to trust. Sears sells a large variety of floor jacks, jack repair kits and parts for more than 60 Craftsman models. The best place to find repair kits and replacement parts is on the Sears Parts Direct website. Simply enter the model number and part number or select a category to find the necessary repair kit.
Lazzar makes repair kits for floor jacks from Chicago Pneumatic, Ram-Pac, U.S. Jack and others. The company also sells metric and standard seals and seal kits. Shop online or call 562-596-5477 for more information or to get help ordering the correct repair kit.
Blackhawk Parts sells a number of different repair kits for hydraulic jacks and tools. Some of the brands it sells include Greenlee, Snap-On, Coats and Dake.