O-ring carries Tamco/Toku part number Y10106270 and is stocked here under TK-Y10106270. It seals a pressure joint inside the rock drill, and because elastomer takes a set long before the metal around it wears, it is one of the first items to replace when a machine starts weeping air or oil.
The published breakdown lists it on the THD 1100N Rock Drill and THD 1100U Rock Drill (CP9A). Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram hub. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: Y10106270
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-Y10106270
- Listed on breakdowns for: THD 1100N Rock Drill, THD 1100U Rock Drill (CP9A)

