Widely used in the hydraulic cylinder to prevent dust, dirt, sand, and metal debris from entering, and easy to install 31.5mmx41.5mmx6mm Y-shape 90A mechanical seal for piston and piston rod Working Speed: Less than 0.5m/s; Working Pressure: Less than 35Mpa; Working Temperature Range: -35°C to 100°C (-31°F to 212°F) Oil resistance, wear resistance, low-temperature resistance, aging resistance, high hardness, elasticity Applied to industrial hydraulic cylinders and cylinders, hoists, moving rods of guide rods, and piston rods (pull rods), and pistons (one-way piston seals) in static pressure