O-ring

Enhance the performance of your Case Construction equipment with O-Ring #272778. 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.

Compatible equipment

This part fits CASE CRAWLER EXCAVATOR - DUAL POWER ELECTRIC & DIESEL ENGINE, DROTT CRAWLER EXCAVATOR, COMPACT WHEEL LOADER TIER 3, INTERNATIONAL HARVESTER COMPACT LOADER, SKID STEER - TIER 3, 420NA N7M466710, 420EU ASN N8M466713, COMPACT TRACK LOADER - SERIES 3, ASN N7M455401, SKID STEER - SERIES 3, ASN 430 NA N7M479683, 430 EU N7M479546, SKID STEER - TIER 3 , ASN N7M425032, SKID STEER - TIER 3 , ASN N7M454787, COMPACT TRACK LOADER - TIER 3 , ASN N8M458846, CASE TRENCHER, CASE LONG TRACK CRAWLER TRACTOR, CASE CRAWLER TRACTOR, IND - CASE CRAWLER TRACTOR, ELECTRIC FOUR WHEEL DRIVE, CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, TURBO LOADER BACKHOE, MOTOR GRADER - ASN 020001, MOTOR GRADER TIER 2- BTW 020101-020187, MOTOR GRADER - ASN 022001, MOTOR GRADER TIER 2 - ASN 022101, MOTOR GRADER - ASN N5AF04007, MOTOR GRADER - ASN 024001, MOTOR GRADER TIER 2 - BTW 024102-024129, CASE TURNTABLE LEVELER CRAWLER EXCAVATOR, CASE TURBO TRENCHER, MINI CRAWLER EXCAVATOR ASN N4TN31001 -, PW12 - MINI CRAWLER EXCAVATOR - BTW PW11-30001 - PW12-40000, ENGINE 504176180 - 87546691, ENGINE 504234738 - 87530652, ENGINE 504387947 - 84230116, ENGINE PN 5802969528 - 61 KW, ENGINE 504387948 - 84171653., ENGINE PN 5802969529 - 67 KW, ENGINE 504387946 - 84230115., ENGINE PN 5802969527 - 55 KW, ENGINE 504162758 - 87380451, SKID STEER LOADER, SKID STEER LOADER - TIER 3 - ROW, SKID STEER LOADER - NRC, COMPACT TRACK LOADER, COMPACT TRACK LOADER - TIER 3 - ROW, COMPACT TRACK LOADER - NRC including models 1088, 120, 321E SERIES 3, 4150, 4155, 420, 420CT, 430, 435, 445, 445CT, 460, 550E, 550G, 550H, 560, 580EV, 580SK, 590, 650G, 650H, 750H, 845, 850E, 850G.

Frequently asked questions

What is the part number?

The manufacturer part number is 272778.

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.

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.