5P8428 FKM O-Ring for Caterpillar Equipment

The 5P8428 is an FKM O-ring used as a sealing component on Caterpillar equipment. It is listed for Caterpillar engines, generator sets, and forest products equipment, including the models and machine series specified below.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The O-ring is specified for the following Caterpillar equipment groups and models:

• Caterpillar engine equipment
• Caterpillar generator set equipment
• Caterpillar forest products equipment
• Caterpillar 3126
• Caterpillar 3176C
• Caterpillar 3196
• Caterpillar 3306
• Caterpillar C-12
• Caterpillar C175
• Caterpillar C7
• Caterpillar C175-16
• Caterpillar TK371
• Caterpillar TK381

Fitment should be checked against the equipment model, the installation location, and the required O-ring size before installation. The listed model information identifies the Caterpillar equipment applications associated with this part number.

Cross-reference numbers

• 5P8428
• 5P-8428

The numbers above identify the same O-ring reference in the available product data. The dash-separated format 5P-8428 and the compact format 5P8428 are both used for this part reference.

Specifications

The dimensions are provided in the product data as cross-section diameter, inside diameter, and outside diameter. The SAE AS568 designation is -261, while the listed nominal size is 261. The specified FKM material and 75 Shore A hardness identify the compound and hardness of the sealing ring.