The L-shaped floating oil seal is designed for high-load equipment, and is often used in parts where various heavy mining equipment is prone to large vibration and shock, such as rocker arms, sprockets, and reducers of coal mining equipment. It consists of a pair of L-shaped float seal rings and a pair of rubber rings, assembled in the L-shaped float seal seat. Since the deformation capacity of the rubber ring is greater than that of the O-ring, it can provide a larger floating range. In addition, the L-shaped floating seal seat is also easy to process and easy to assemble.