5S1105 O-Ring Seal for Caterpillar Equipment

5S1105 is an O-ring seal used in Caterpillar equipment and engines for sealing fixed and moving components. The part is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The seal is listed for Caterpillar construction machinery, industrial engines, marine products, engine-generator sets, and truck engines. Its application is determined by the sealing location and the corresponding equipment assembly.

Fitment

• Track-Type Tractor: Caterpillar D4D
• Challenger: Caterpillar 75, 75C, 85C, 85D
• Pipelayer: Caterpillar 561B
• Wheel-Type Loader: Caterpillar 972G
• Load, Haul, Dump: Caterpillar R1700II
• Track-Type Loader: Caterpillar 951B, 955H, 955K, 977H, 977K
• Engine – Industrial: Caterpillar 3176, C12, 3176C, 3176B, 3196, C-12, D320A, D346, D348, G3306, G333C, G3406
• Marine Products: Caterpillar 3608, D333A, D333B, D346, D348, D349
• Engine-Generator Set: Caterpillar 3608, G3406
• Engine – Truck: Caterpillar 1673B

Cross-reference numbers

• 5S1105
• 5S-1105

Specifications

As an O-ring seal, the part is installed in a sealing groove between mating components. Its function is to restrict the passage of fluids and prevent contamination at the connection. The listed equipment applications include complete machines as well as Caterpillar engine and power-unit families.

The dimensions and weight above are the available product specifications. They are provided separately from the equipment model list and should be checked against the sealing position and service-part identification for the specific Caterpillar assembly.