BA type is a result of the advancement and development of lip sealing. It combines the advantages of high elasticity O-ring and lip sealing material wear resistance. This special seal is mainly used for walking equipment due to its special structure (assembly of O-ring). This O-ring ensures the pre pressure of the sealing lip under low pressure or vacuum conditions, which is necessary for sealing performance. The sealing force is basically independent of temperature changes, and even if some degree of wear occurs, it will ensure the necessary preloading amount. The lip is loaded due to the increase in system pressure, which is transmitted to the lip through the compressed and deformed O-ring. Main advantages Extremely strong wear resistance. Not sensitive to vibration loads and pressure peaks. High resistance to compression. Has ideal sealing effect under no-load and low-temperature conditions. Suitable for the most demanding working conditions. Easy to install. technical parameter Working pressure: ≤ 350bar Working temperature: -35 ℃~+90 ℃ Surface velocity: ≤ 0.5m/s When selecting a seal with a certain diameter, it is best to choose the one with the maximum possible cross-section Sealing element for area. Mainly used for sealing plungers, piston rods, multi-stage cylinders for air drills, forging machines, and Hydraulic equipment for walking equipment. Installation This type of seal should have an axial clearance (see columns H and L in the table). To avoid damaging the sealing lip during installation, do not remove the seal Pull up on the sharp edge. Usually, this type of seal can be fitted into a closed groove In the slot. For the case of ultimate diameter and ultimate cross-section, when When open grooves are not allowed, installation aids should be used. Materials Imported polyurethane with a Shore hardness of 95, The O-ring material is Shore grade nitrile rubber.