BD type piston rod seal is a new sealing product, which has two sealing lips and a strong anti extrusion retaining ring. Due to the action of the two sealing lips, this additional lubrication is maintained in the sealing gap. This greatly reduces dry friction and wear, thereby extending the service life of the seal. Under certain conditions, satisfactory sealing performance can only be achieved through two seals installed in their respective grooves, one in the front and one in the back. BD, a two lip seal, can replace expensive series devices. This type of seal can be used in various situations where the physical properties of ordinary rubber or fabric reinforced rubber cannot meet the requirements. Main advantages Excellent wear resistance. ● Impact resistant and extrusion resistant. Low compression deformation. Suitable for the most demanding working conditions. Due to the pressure medium between the sealing lips, it has sufficient lubrication. Improved sealing performance under zero pressure. Extremely prevents the entry of external air. technical parameter Working pressure: ≤ 500bar Working temperature: -35 ℃~+110 ℃ Surface velocity: ≤ 0.5m/s Medium hydraulic oil (mineral oil-based) Installation This type of seal should have an axial clearance (see columns H and L in the table). To avoid damage to the sealing lip, do not load the seal during installation Pull up on sharp edges. These seals can usually be installed into closed grooves.