BU type piston rod seal is a type of sealing that consists of two sealing lips and is Tight fitting lip seal. This type of seal is mainly used in construction machinery Used as a buffer seal in the oil cylinder sealing system. Under extreme operating conditions, The cylinder pressure often reaches up to 1000 bar. BU type piston rod seal and this Separate the load. Due to its unique structure, this type of seal The pressure formed between the buffer seal is transmitted back to the system. This kind of secrecy Seals can be used individually or configured in series. Main advantages Excellent wear resistance and easy installation. ● Resistance to impact loads and pressure peaks Anti extrusion, with small compression deformation. Capable of adapting to the most demanding working conditions. Comply with international standards ISO7425/II and 5597/I for sealing groove design. technical parameter Working pressure: ≤ 500bar (peak pressure reaches 1000bar) Working temperature: -35 ℃~+100 ℃ Reciprocating speed: ≤ 0.5m/s Mainly used for sealing hydraulic cylinders in walking machinery. Media Hydraulic oil (mineral oil based) Installation This type of seal should have an axial clearance (see columns H and L). To avoid damage to the sealing lip, do not install the seal Pull the seal onto the sharp edge. These types of seals can usually be installed in closed grooves. When restricted at the entrance, special installation tools should be used. If requested by the user, our company will provide the design of such tools The tolerance criterion for the plan is H8/f7.