5M1868 Silicone O-Ring for Caterpillar Equipment

The 5M1868 is a standard silicone O-ring used as an axial or radial seal in Caterpillar equipment and engines. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The seal is intended for applications where an O-ring is required to limit the passage of fluids and contamination between mating components. The part is supplied as an individual O-ring with a silicone (VMQ) sealing material and a Shore A hardness of 70.

Fitment

• Caterpillar 3306 engine
• Caterpillar SR4 equipment
• Caterpillar D346 engine
• Caterpillar D348 engine
• Caterpillar 3406E engine
• Caterpillar 6A equipment
• Caterpillar 6S equipment
• Caterpillar D6E SR track-type tractor

The listed application groups include Caterpillar machine engines, industrial engines, marine engines, truck engines, and track-type tractor equipment. Fitment should be checked against the equipment model and the required seal dimensions before installation.

Cross-reference numbers

• 5M1868
• 5M-1868

5M-1868 is the hyphenated part-number format associated with SKU 5M1868. Both number formats identify the same O-ring reference in the supplied application data.

Specifications

SKU: 5M1868. The dimensional values above describe the O-ring cross-section, inner diameter, and outside diameter; the length, width, and depth values are listed separately as supplied product dimensions.