The pressure of QGB heavy duty pneumatic Lift Air cylinder is above 25 MPa, so that the height of the sealing element of the equipment to a certain extent determines the size of the deformation of the sealing element root, the size of the extrusion gap of QGB cylinder, because the gasket also has hardness and deformation, plus its gasket is equal to reduce the deformation of the sealing element. When the seal of QGB cylinder is under high pressure, the root is removed to reduce the possibility of friction with the piston rod and the inner wall of the cylinder body, so as to reduce the possibility of damage of the seal root caused by extrusion strain to a certain extent. The relationship between the hardness of the washer in the equipment and the pressure is that the greater the pressure, the greater the hardness.
