FEATURES: Fitment: This is the seal kit for the Hein Werner WS Floor Jack 1-1/2 Ton all years model. Replacement: Replace for factory part number: H8074700, 80747. Function: This Seal Kit is used for jack repair/rebuild and covers all the seals for the complete hydraulic unit. Replacing the old or damaged seals can help fix the problems of leaking fluid, valve blocked or lifting speed uneven, and ensure the proper operation of your floor jack. Premium Material: Made of top materials Viton and High Grade Urethane Seals to leakproof, wear-resisting and durable, ensure you will only have to rebuild your unit once for the life of the unit .