2385081 O-Ring Seal

The 2385081 O-ring seal is used in Caterpillar equipment to seal fixed and some moving connections. It is a parallel-thread O-ring for STOR-type fittings with a 7/8-14 inch fitting size. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The seal is identified by the Caterpillar service number 238-5081 and the SKU 2385081. The available technical data identifies the sealing material as FCM rubber, with a PTFE coating, light blue colour, and a hardness of 90 Shore A.

Fitment

The O-ring is listed for the following Caterpillar equipment types and models:

• Caterpillar articulated dump trucks
• Caterpillar asphalt pavers
• Caterpillar 725
• Caterpillar 730
• Caterpillar 735
• Caterpillar 740
• Caterpillar D350E II
• Caterpillar AP500E
• Caterpillar AP555E
• Caterpillar BG500E

Listed machine applications include the Caterpillar 725, 730, 735, and 740 articulated dump truck models, the Caterpillar D350E II, and the Caterpillar AP500E, AP555E, and BG500E asphalt paver models. Verify the machine serial number and the existing seal dimensions before installation.

Cross-reference numbers

Numbers 2385081 and 238-5081 refer to the same listed seal identification in different number formats. The SAE AS568 designation provided for this O-ring is -910.

Specifications

The listed dimensions are the product package or component dimensions supplied for this part: 2.3 cm in length, 2.3 cm in width, and 0.2 cm in depth. The sealing dimensions are specified separately as a 0.76-inch inner diameter, 0.949-inch outside diameter, and 0.1-inch cross-section diameter.