O-ring Cl.5 Peroxide Cure

Enhance your heavy equipment’s performance with the Case Construction O-Ring Cl.5 Peroxide Cure #87421144. Designed for durability and reliability, this high-quality O-ring ensures optimal sealing and longevity, making it essential for maintaining your machinery’s efficiency.

Compatible equipment

This part fits WHEEL LOADER - TIER 4B (NA), CASE CRAWLER TRACTOR, UTILITY BACKHOE, BACKHOE, CASE WHEEL TRACTOR, CASE INDUSTRIAL TRACTOR, CASE CONSTRUCTION KING LOADER BACKHOE, IND - CASE CRAWLER TRACTOR, TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION), LOADER BACKHOE (NORTH AMERICA), LOADER BACKHOE (NORTH AMERICA) (ASN JJG0020000), CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE - BSN JJG0239361, SERIES 2 LOADER BACKHOE - ASN JJG0239360, SERIES 2 LOADER BACKHOE TIER 2 (NA) - ASN N4C304000, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C5040000, SERIES 2 LOADER BACKHOE TIER 2 (NA) - ASN N4C307000, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C508000, TURBO LOADER BACKHOE, LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, SERIES 2 LOADER BACKHOE TIER 2 (NA) - ASN N4C309000, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C508500, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N7C431854, SERIES 1 CRAWLER - 07/01/2002 - 01/31/2005, SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006, SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008, CRAWLER DOZER TIER 3 (HYDRO), CRAWLER DOZER - TIER 4B, CASE TRENCHER, WHEEL LOADER - TIER 4 / TIER 2 (NA), CRAWLER DOZER TIER 3, CRAWLER DOZER - TIER 4A, CASE WHEEL LOADER (NORTH AMERICA), CASE WHEEL LOADER (S/N JEE0155000 & BEFORE), CASE WHEEL LOADER (S/N JEE0155001 & AFTER), WHEEL LOADER TIER 3 (NA/EU), SKID STEER LOADER, SKID STEER LOADER - NRC, SKID STEER LOADER - TIER 4B, SKID STEER LOADER - TIER 4A, SKID STEER LOADER TIER 4, COMPACT TRACK LOADER, COMPACT TRACK LOADER - NRC, COMPACT TRACK LOADER - TIER 4B, COMPACT TRACK LOADER - TIER 4A including models 1021G, 1121G, 1550, 22, 26D, 31, 320B, 420, 420B, 420BD, 480E, 480F, 550H, 560, 580K, 580SK, 580SL, 580SM, 590, 590L, 590SL, 590SM, 650G, 650H, 650K.

Frequently asked questions

What is the part number?

The manufacturer part number is 87421144.

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.