These seal kits for shocks meet the highest standards for toughness, tear strength, resilience and extrusion resistance, giving shocks the ability to handle heavy loads while reducing friction, Performs from -115F to 275F, 5,000 psi tensile strength compared to current seals’ 1,700 psi, Highly abrasion- and wear-resistant, Wear sleeve jackets feature PTFE and bronze for added wear and pressure resistance in temperatures of -250F to 500F, Maintained properly, these seals will outlast current seals 10-1, Available in complete kits to rebuild one shock or one reservoir, service kits which contain seals and O-rings needed for oil change only