O-ring

Enhance your heavy equipment’s performance with the Case Construction O-Ring #455025. Designed for durability and precision, this essential component ensures a reliable seal, preventing leaks and maintaining optimal functionality in your machinery. Perfect for all Case models.

Compatible equipment

This part fits CASE CRUZ-AIR WHEELED EXCAVATOR, CASE TORQUE CONVERTER CRAWLER TRACTOR (BEFORE S/N 7109000), CASE TORQUE CONVERTER CRAWLER TRACTOR (S/N 7109000 TO 7110299), CASE TORQUE CONVERTER CRAWLER TRACTOR (S/N 7110300 & AFTER), DROTT CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR (NORTH AMERICA), SERIES 3 CRAWLER TIER 3, CRAWLER DOZER - TIER 1, CASE CRAWLER DOZER (TIER 1), CRAWLER DOZER TIER 2, WINCH, POCLAIN CRAWLER EXCAVATOR, POCLAIN CRAWLER EXCAVATOR - CK (12440-13030) - CL (8441-8714), POCLAIN CRAWLER EXCAVATOR - ELECTRICAL MOTOR (ZAIRE), BACKHOE, DROTT SERIES-B CRAWLER EXCAVATOR, DROTT SERIES-B FELLER/BUNCHER CRAWLER EXCAVATOR, DROTT SERIES-A CRAWLER EXCAVATOR, DROTT SERIES-B CRAWLER EXCAVATOR (S/N 550 & AFTER), CASE ENGINE, CASE WHEEL LOADER (BEFORE S/N JEE0135500), CASE WHEEL LOADER (S/N JEE0135501 & AFTER) - ENGINE SUPPLEMENT, CASE WHEEL LOADER - NA (S/N JEE0135501 & AFTER), WHEEL LOADER TIER 3 (NA), WHEEL LOADER - TIER 4 (NA), WHEEL LOADER - TIER 4B (NA), CASE TERRATRAC CRAWLER TRACTOR (DIESEL), CASE TERRATRAC GASOLINE CRAWLER TRACTOR, CASE CONSTRUCTION KING LOADER BACKHOE (S/N 9101501 TO 9102281), CASE CONSTRUCTION KING LOADER BACKHOE (UP TO S/N 9101501), CASE SERIES-B CONSTRUCTION KING LOADER BACKHOE (S/N 9102282 TO 9103968, CASE SERIES-B LOADER BACKHOE (S/N 9103967 TO 9105879), CASE WHEEL LOADER (NORTH AMERICA), WHEEL LOADER - TIER 4 / TIER 2 (NA), WHEEL LOADER WASTE HANDLING - TIER 4A (NA), CASE CRAWLER TRACTOR (AFTER S/N 7070351), POCLAIN WHEELED EXCAVATOR, CASE WHEEL LOADER (S/N JEE0155000 & BEFORE), CASE WHEEL LOADER (S/N JEE0155001 & AFTER), CASE CRAWLER EXCAVATOR, CASE/POCLAIN CRAWLER EXCAVATOR (S/N 9501 & AFTER), CASE UNIT LOADER (PRIOR TO S/N 8229367), CASE WHEEL LOADER (S/N 8208732 TO 9808999), CASE WHEEL LOADER (S/N 9809000 TO 9811800), CASE WHEEL LOADER (S/N 9811801 & AFTER), CASE ARTICULATED WHEEL LOADER (NORTH AMERICA), CASE WHEEL LOADER (S/N 9123140 & AFTER) (NORTH AMERICA), CASE WHEEL LOADER (PRIOR TO S/N 9123140), CASE WHEEL LOADER W/POD CAB - NEW YORK STATE SPECIAL, CASE WHEEL LOADER (S/N 17754000 & AFTER), CASE WHEEL LOADER including models 1085B, 1085C, 1086B, 1150, 120, 125B, 1850K, 1850K LGP, 1850K LT, 1850K TIER 1, 1850K TIER 2, 1850K XLT, 19, 220, 220B, 26C, 35EC, 35YC, 40BLC, 40EC, 40YC, 50, 504BD, 521D, 521E.

Frequently asked questions

What is the part number?

The manufacturer part number is 455025.

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.

Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.

30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.