8S-5953 Fits Caterpillar Hydraulic O-Ring - Buna-N Nitrile (90A) Direct-Fit Replacement Sealing Ring for hydraulic cylinders and heavy equipment

Chasing a leak and need the exact replacement to seal it for good? A worn or wrong o-ring lets fluid weep past the joint, drops pressure, and can damage the equipment around it.

This Beaver Island Parts Company replacement o-ring is an exact-fit replacement for Caterpillar part 8S-5953, molded in durable 90A Buna-N Nitrile Rubber, 90A Durometer for a lasting seal.

Full Compatibility: Fits Caterpillar Hydraulic equipment and replaces OEM part 8S-5953. Molded to match the original part so it drops straight into the same groove.
Installation Note: Clean the groove, inspect the sealing surface, seat the new o-ring without twisting it, and lubricate before assembly.
Pro Tip: Apply Aqua Flex lubricant before installation to ease seating and extend seal life.

We are an American family-owned and operated small business committed to providing high-quality replacement parts and honest fitment information.

Note: Beaver Island Parts Company is not affiliated with Caterpillar. All brand names, model numbers and part numbers referenced are used solely to confirm compatibility and are the trademarks of their respective owners.