Oil Seal 1B2257 for Caterpillar Equipment

The 1B2257 is an oil seal used in equipment manufactured by Caterpillar. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The available product data identifies the part by the Caterpillar equipment application and the dimensions listed below; specific machine model or series compatibility is not provided.

This part belongs to the oil seal category and is intended for an installation involving a shaft with a diameter of 41 mm and a housing or installation hole with a diameter of 73 mm. The main sealing material is rubber. The supplied dimensional data describes the part as 10.16 cm in length, 15.24 cm in width, and 1.27 cm in depth.

Cross-reference numbers

• 1B2257
• 1B-2257

The numbers 1B2257 and 1B-2257 identify the same seal designation in the available part data. Verify the number stamped on the removed part and the required installation dimensions before fitting.

Specifications

The shaft diameter and hole diameter are the principal dimensional references for checking the installation location. The listed 41 mm shaft diameter corresponds to the internal fitting dimension, while the 73 mm hole diameter identifies the installation opening. The rubber material specification applies to the main seal body.

The listed length, width, and depth are the packaged or recorded overall dimensions available for this part. The product data does not specify the exact machine position, seal lip configuration, rotational direction, temperature range, pressure rating, or included additional components. No specific Caterpillar machine models or series are identified in the available information.