162-7210 177.8 mm OD Support Ring
Cat® 177.8 mm OD plastic support ring used in hydraulic cylinders
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Cat® 177.8 mm OD plastic support ring used in hydraulic cylinders


Backup rings can prevent seal extrusion in high-pressure applications and can also be used to protect the life of the overall sealing system under sudden pressure changes. Features Cat® backup rings are designed together with the elastomeric seal and mating components and contribute greatly to the life and performance of sealing systems in high-pressure applications….





Cat® 217.65 mm ID plastic support ring used in hydraulic piston motors

Cat® 179.77 mm ID plastic support ring used in hydraulic piston motors

Cat® 32.70 mm ID Plastic Bearing Ring for Hydraulic Relief Valves

Cat® 35.88 mm ID Plastic Backup Ring with Slit Cut Used in Relief Valve

Cat® power train backup ring prevents fluid leakage and maintains proper pressure in the parking brake.



Cat® 65 mm ID Plastic Backup Ring with Cross-Cut for Hydraulic Track Adjusters

Cat® 65 mm ID Plastic Backup Ring with Cross-Cut for Hydraulic Track Adjusters