Ring 2K2940 for Caterpillar Equipment

2K2940 is a transmission seal ring used in sealing assemblies of Caterpillar construction and earthmoving equipment. The ring is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

This component is a back-up ring for high-pressure sealing applications. It supports the seal against extrusion and helps maintain the position of the sealing element when pressure changes occur within the assembly. The part is listed for use with Caterpillar tracked bulldozers, wheeled tractor-scrapers, excavators, track loaders, and wheel loaders.

Fitment

• Tracked bulldozers: 6A, 6S, 8, 8A, 8B, 8C, 8D, 8S, 8SU, 8U, D8T, D9G, 153, 163, 183, 183B, 4, 5, 55, 57H, 5A, 5S, 6, 9A, 9S, 9U, D5B, D5E, D6D, D6E, D6F SR, D6G, D6G SR, D6G2 XL, D8K, D8N, D8R, D8R II.
• Wheeled tractor-scrapers: 621F, 621G, 627, 627B, 627E, 627F, 627G, 630B, 631B, 631C, 631E, 631G, 633, 633B, 633D, 633E, 637B, 637D, 637E, 637G, 639D, 641B, 651B, 651E, 657, 657E, 657G, 621E.
• Excavators: 235, 235B, 235C, 235D.
• Track loaders: 951, 955, 977, 977A, 977D, 977H, 983, 983B.
• Wheel loaders: 980, 980B, 988.

Cross-reference numbers

• Equipment manufacturer reference: 2K-2940.
• Product SKU: 2K2940.

Specifications