Seal Ring 9X3977 for Caterpillar Equipment

Seal ring 9X3977 is a rectangular-section transmission seal used in Caterpillar underground articulated trucks, wheel-type loaders, earthmoving compactors, wheel dozers, load-haul-dump machines, and articulated dump trucks. The ring is designed to help prevent fluid leakage and the entry of contaminants at the sealed connection. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The seal ring is listed for the following Caterpillar equipment models and machine series:

• Underground articulated trucks:
  • AD30
  • AD40
  • AD45
  • AE40
• Wheel-type loaders:
  • 980XE
  • 980
  • 980L
  • 966F II
  • 972H
  • 980C
  • 980F
  • 980F II
  • 980G
  • 980G II
  • 980H
  • 980K
  • 980K HLG
  • 980M
• Earthmoving compactors:
  • 825G
  • 825G II
  • 826G
  • 826G II
• Wheel dozers:
  • 824C
  • 824G
  • 824G II
  • 824H
  • 824K
• Load-haul-dump machines:
  • R1700II
  • R1700G
  • R1700K
• Articulated dump trucks:
  • D35C
  • D35HP
  • D400D
  • D40D

Cross-reference numbers

The part is identified by the following number formats:

• 9X3977
• 9X-3977

Specifications