8L9241 O-Ring for Caterpillar Equipment

The 8L9241 is a standard O-ring used in Caterpillar engines and machines. It is specified for axial and radial sealing applications and is made from nitrile rubber (NBR) with a hardness of 75 Shore A. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar-style number 8L-9241 and the compact catalog number 8L9241. The supplied component is a single black O-ring; no coating is specified.

Fitment

The O-ring is listed for Caterpillar engine and machine applications, including the following equipment models and engine series:

• Caterpillar 3306
• Caterpillar 3406
• Caterpillar 3406B
• Caterpillar 3406C
• Caterpillar 3408
• Caterpillar 3408C
• Caterpillar 3408E
• Caterpillar 3412
• Caterpillar 3412D
• Caterpillar 3412E

Fitment depends on the specific engine or machine configuration and the sealing location. Before installation, compare the removed seal with the stated dimensions and verify the required part number in the equipment parts documentation.

Cross-reference numbers

8L9241 and 8L-9241 refer to the same catalog number format for this O-ring. The SAE AS568 designation is -377.

Specifications

The dimensional data is stated in both inch and centimetre units where provided. The cross-section, inside diameter and outside diameter describe the O-ring dimensions; the package dimensions are listed separately as length, width and depth.