1T1639 Ring for Caterpillar

1T1639 is a transmission seal ring for Caterpillar equipment. It is a D-Ring with a curved outside diameter cross-section and is made from FKM rubber. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar equipment part number 1T-1639 and the SKU 1T1639. The available product data does not specify individual Caterpillar machine models or series, so fitment is limited to the stated Caterpillar equipment application and must be verified against the machine parts documentation.

Cross-reference numbers

• 1T1639
• 1T-1639

Specifications

The sealing element has an FKM rubber construction and a specified hardness of 75 Shore A. The dimensions supplied for the ring are an inner diameter of 11.221 inches, an outside diameter of 12.126 inches, a cross-section height of 0.453 inches, a cross-section width of 0.197 inches, and a listed width of 0.5 inches.

The product data identifies the cross-section as curved on the outside diameter. No coating is specified. The listed metric measurements are length 30.48 cm, width 38.1 cm, and depth 2.54 cm; the source data does not further define whether these values describe the part itself or its packing dimensions.

Use the part number, seal profile, material, and dimensional data when checking the ring against the removed component and the transmission parts documentation for the Caterpillar machine.