4H1860 O-Ring for Caterpillar Equipment

The 4H1860 is an O-ring used as a sealing component in Caterpillar equipment, including Caterpillar engine-generator sets, industrial engines, and marine engines. It is installed in fixed and selected movable connections where an elastomeric ring is required for sealing. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

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

• Caterpillar 3508
• Caterpillar 3512
• Caterpillar 3516
• Caterpillar 7211
• Caterpillar 7221

Equipment categories specified for this part include Caterpillar engine-generator sets, Caterpillar industrial engines, and Caterpillar marine engines. The listed model application should be checked against the equipment serial number and the sealing location before installation.

Cross-reference numbers

Specifications

The sealing ring has a nominal cross-section diameter of 0.28 inch, an inner diameter of 1.23 inches, and an outside diameter of 1.776 inches. The dimensional data is provided in both inch and centimetre formats where specified. The listed length, width, and depth refer to the supplied part dimensions as recorded for this SKU.

The O-ring is made from NBR material with a hardness of 75 Shore A and has no coating. Installation position is determined by the equipment assembly and the location of the seal identified by the applicable Caterpillar parts documentation.