Ordering by number: this is 131101027, the Tamco/Toku O-ring. Seals like this one are consumables in a rock drill they are cheap, they age with heat and hours, and replacing the whole set during a teardown saves a second strip-down later.
It shows up in the parts breakdown for the TJ 20 Rock Drill (RD 40). That machine is the Tamco/Toku TJ-20 Rock Drill if you are pricing a replacement rather than a repair. Check it against the reference number on the diagram first; serial breaks change what fits.
Need the parts around it? They are on the same breakdown, and the parts diagram library covers every machine we publish. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 131101027
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-131101027
- Listed on breakdowns for: TJ 20 Rock Drill (RD 40)

