Опорное кольцо, внутренний диаметр 201,3 мм Caterpillar 5690071

A Backup Ring, also called a backup washer, is used to provide support and prevent the extrusion of the primary sealing element placed around the cylinder rods. It is made from plastic material and ensures the primary seals, like O-rings or other seals, retain their shape and sealing capabilities during dynamic movements.Attributes:• Helps to reduce the friction between the mating parts• Offers high flexibility and durabilityApplications:A Backup Ring acts as a mechanical barrier in preventing the entry of external elements and works in conjunction with the primary seal to maintain a reliable and leak-free sealing and ensure its sealing capabilities.