O-Ring Oring
| Machine | Model | Years / S/N |
|---|---|---|
| CASE CRAWLER EXCAVATOR | 1080 | 1983 – 1986 |
| CASE CRAWLER EXCAVATOR | 1080B | 1986 – 1988 |
| CASE LOGGER CRAWLER EXCAVATOR | 1187 | 1983 – 1985 |
| CASE LOGGER CRAWLER EXCAVATOR | 1187B | 1985 – 1988 |
| CASE FELLER/BUNCHER CRAWLER EXCAVATOR | 1187C | 1989 – 1992 |
| COMPACT WHEEL LOADER W/MONO BOOM (NA) | 121E | 2005 – 2007 |
| COMPACT WHEEL LOADER TIER 3 | 121E SERIES 3 | 2007 – 2014 |
| CASE CRAWLER EXCAVATOR | 1280B | 1983 – 1986 |
| COMPACT WHEEL LOADER TIER 2 (NA) | 21D | 2002 – 2004 |
| SMALL WHEEL LOADER | 21D | 2002 – 2004 |
Enhance your heavy equipment’s performance with the Case Construction O-Ring #100123. Designed for durability and precision, this essential part ensures optimal sealing and reliability, keeping your machinery running smoothly in the toughest conditions. Perfect for maintenance and repairs. This product is a genuine OEM part, ensuring quality and reliability.
Compatible equipment
This part fits CASE CRAWLER EXCAVATOR, CASE LOGGER CRAWLER EXCAVATOR, CASE FELLER/BUNCHER CRAWLER EXCAVATOR, COMPACT WHEEL LOADER W/MONO BOOM (NA), COMPACT WHEEL LOADER TIER 3, COMPACT WHEEL LOADER TIER 2 (NA), SMALL WHEEL LOADER, SMALL WHEEL LOADER (EUR), SMALL WHEEL LOADER (TIER II) (EUROPE) including models 1080, 1080B, 1187, 1187B, 1187C, 121E, 121E SERIES 3, 1280B, 21D, 21E, 21E SERIES 3, 221D, 221E, 221E SERIES 3, 321D, 321E, 321E SERIES 3.
Frequently asked questions
What is the part number?
The manufacturer part number is 100123.
Is this a genuine OEM part?
Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option.
Will this fit my machine?
See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.
Where does this ship from?
Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.
WARNING:For California residents — Cancer and Reproductive Harm. www.P65Warnings.ca.gov
- Manufacturer part number
- 100123
- Internal SKU
- IC:100123
- Brand
- Case Construction
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.01 lb
Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.
Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.
30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.
All 24 fitments
| Machine | Model | Years / S/N |
|---|---|---|
| CASE CRAWLER EXCAVATOR | 1080 | 1983 – 1986 |
| CASE CRAWLER EXCAVATOR | 1080B | 1986 – 1988 |
| CASE LOGGER CRAWLER EXCAVATOR | 1187 | 1983 – 1985 |
| CASE LOGGER CRAWLER EXCAVATOR | 1187B | 1985 – 1988 |
| CASE FELLER/BUNCHER CRAWLER EXCAVATOR | 1187C | 1989 – 1992 |
| COMPACT WHEEL LOADER W/MONO BOOM (NA) | 121E | 2005 – 2007 |
| COMPACT WHEEL LOADER TIER 3 | 121E SERIES 3 | 2007 – 2014 |
| CASE CRAWLER EXCAVATOR | 1280B | 1983 – 1986 |
| COMPACT WHEEL LOADER TIER 2 (NA) | 21D | 2002 – 2004 |
| SMALL WHEEL LOADER | 21D | 2002 – 2004 |
| COMPACT WHEEL LOADER W/MONO BOOM (NA) | 21E | 2005 – 2007 |
| SMALL WHEEL LOADER (EUR) | 21E | 2005 – 2007 |
| COMPACT WHEEL LOADER TIER 3 | 21E SERIES 3 | 2007 – 2014 |
| COMPACT WHEEL LOADER TIER 2 (NA) | 221D | 2004 |
| SMALL WHEEL LOADER | 221D | 2002 – 2004 |
| COMPACT WHEEL LOADER W/MONO BOOM (NA) | 221E | 2005 – 2007 |
| SMALL WHEEL LOADER (EUR) | 221E | 2005 – 2007 |
| COMPACT WHEEL LOADER TIER 3 | 221E SERIES 3 | 2007 – 2014 |
| COMPACT WHEEL LOADER TIER 2 (NA) | 321D | 2004 – 2005 |
| SMALL WHEEL LOADER | 321D | 2002 – 2004 |
| SMALL WHEEL LOADER (TIER II) (EUROPE) | 321D | 2004 – 2005 |
| COMPACT WHEEL LOADER W/MONO BOOM (NA) | 321E | 2005 – 2007 |
| SMALL WHEEL LOADER (EUR) | 321E | 2005 – 2007 |
| COMPACT WHEEL LOADER TIER 3 | 321E SERIES 3 | 2007 – 2014 |