4P9388 Seal Liner for Caterpillar Equipment

The 4P9388 Seal Liner is an O-ring seal used in Caterpillar equipment and Caterpillar industrial engines. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The seal has a round profile with a variable cross-section. The supplied technical data identifies EPDM, modified ethylene-propylene-diene rubber, as the material. The part is listed for applications where the seal liner is used to help prevent leakage and the entry of contaminants at the sealing point.

Fitment

The 4P9388 seal liner is listed for the following Caterpillar equipment and engine applications:

• Challenger 75
• Challenger 75C
• Challenger 85C
• Challenger 85D
• Caterpillar 3176 industrial engine
• Caterpillar 3176B industrial engine
• Caterpillar R1700II load-delivery machine

Fitment should be checked by comparing the equipment model and the part number before installation. The model groups listed above are taken from the available application data for part number 4P-9388.

Cross-reference numbers

4P9388 and 4P-9388 are the two number formats provided for this seal liner. No additional supplier numbers are included in the available product data.

Specifications

The inner diameter and cross-section values are provided in inches. The length, width, and depth values are listed separately in centimetres in the source data and are not identified as additional seal-profile dimensions.