208-9791: 24.3mm Inner Diameter Backup Ring

A Backup Ring is a type of sealing component that is used in conjunction with an O-ring to prevent extrusion under high pressure and temperature conditions. It is made of a harder material than the O-ring and is placed on the opposite side of the O-ring from the pressure source for secure sealing within the valve. Attributes: • Helps to reduce the friction between the mating parts • Features a slit cut which helps equalize the pressure buildup on the primary sealing element 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 control valve.