Опорное кольцо с внутренним диаметром 150 мм Caterpillar 5239723

A Backup Ring, also called a backup washer, helps to provide support and prevent the extrusion of the primary sealing element that is fitted on the groove of the hydraulic cylinder head. It is made from an elastic material such as rubber and forms a secondary sealing to the cylinder head by minimizing the potential for fluid bypass or leakage. Attributes:• Helps to reduce the friction between the sealing components• Prevents the sealing element from coming into direct contact with abrasive particles Applications:A Backup Ring acts as a mechanical barrier in preventing the entry of external elements and protecting the primary sealing element of the hydraulic cylinder head and ensures effective sealing.