Caterpillar Inc. 6J-2419 Seal-O-Ring

The CAT 6J-2419 Seal-O-Ring is a Caterpillar OEM O-ring designed to seal hydraulic and transmission interfaces on heavy equipment. It carries the Cat part number 6J-2419 and specifies a 36.17 mm inside diameter for a precise fit in compatible housings. This Seal-O-Ring is associated with Caterpillar transmissions including CX31-C9I, CX31-P600, CX48, and CX48-P2300, serving as a replaceable element to prevent fluid leaks under operating pressure. As a factory-listed seal, it provides a direct, compatible option for maintaining sealing integrity in the listed CAT transmission models and related hydraulic assemblies. The part’s exact fitment is defined by Caterpillar’s service documentation and the listed models, making it a targeted replacement for the specified equipment.