O-ring 3.1mm Thick X 99.4mm Id 70 Duro

Enhance your heavy equipment’s performance with the Case Construction O-Ring. Measuring 3.1mm thick and 99.4mm ID with a 70 Duro rating, this durable O-Ring ensures reliable sealing and optimal functionality for your machinery. Perfect for demanding applications.

Compatible equipment

This part fits CASE LONG TRACK/TURNABLE LEVELER CRAWLER EXCAVATOR, CASE HYDRAULIC CRAWLER EXCAVATOR (S/N 17001 & AFTER), CASE HYDRAULIC CRAWLER EXCAVATOR (S/N 17601 & AFTER), CASE HYDRAULIC CRAWLER EXCAVATOR (S/N 18601 & AFTER), CASE HYDRAULIC CRAWLER EXCAVATOR (S/N 109101 & AFTER), CASE WHEELED EXCAVATOR (ON & BEFORE S/N 8699), CASE WHEELED EXCAVATOR (S/N 8701 & AFTER), CASE WHEELED EXCAVATOR (S/N 9601 TO 9699), CASE WHEELED EXCAVATOR (S/N 9701 & AFTER), CASE CRAWLER EXCAVATOR (NORTH AMERICA), CASE CRAWLER EXCAVATOR - DONG AH CONTRACT, CASE CRAWLER EXCAVATOR - ELECTRIC MOTOR (550V), CASE CRAWLER EXCAVATOR - SUPPLEMENT (EUROPE), CASE EXCAVATOR - ATTACHMENTS (EUROPE), CASE EXCAVATOR - ELECTRO-MAGNET, CASE EXCAVATOR - ELECTRO-MAGNET (EGYPT), CASE EXCAVATOR - HYDRAULIC PICK HAMMER, CASE EXCAVATOR - RAISED CAB AND CAB GUARD, CASE EXCAVATOR - REHANDLING ATTACHMENT, CASE EXCAVATOR - TELESCOPIC CAB - CRAWLER, CASE EXCAVATOR - TELESCOPIC CAB - WHEELED, CASE EXCAVATOR - TELESCOPIC DIPPERSTICK, CASE WHEELED EXCAVATOR (S/N 9900-) (S/N 25252-) (S/N 27001-), CASE CRAWLER EXCAVATOR (S/N CGG0023701 & AFTER), CASE CRAWLER EXCAVATOR (S/N CGG0022201 & AFTER), CASE CRAWLER EXCAVATOR - FRENCH ARMY, CASE CRAWLER EXCAVATOR (S/N CGG0117101 & AFTER), CASE CRAWLER EXCAVATOR (S/N CGG0214501 & AFTER), CASE CRAWLER EXCAVATOR (S/N CGG0225001 & AFTER), CASE CRAWLER EXCAVATOR (S/N 12123 -) (S/N 10001-), CASE CRAWLER EXCAVATOR - SHORT TURRET, CASE WHEELED EXCAVATOR, CASE WHEELED EXCAVATOR (S/N 25123-) (S/N 1501-), SHORT TURRET WHEELED EXCAVATOR, CASE CRAWLER EXCAVATOR (PRIOR TO S/N CGG0011601), CASE CRAWLER EXCAVATOR (S/N CGG0011601 & AFTER), CASE WHEELED EXCAVATOR (S/N 3101 & AFTER), CASE CRAWLER EXCAVATOR (S/N 10501 & AFTER), CASE EXCAVATOR - LONG DITCH CLEANING ATTACHMENT, CASE EXCAVATOR - TWO-PIECE ATTACHMENT, POCLAIN CRAWLER EXCAVATOR - LOW GROUND BEARING PRESSURE, POCLAIN CRAWLER EXCAVATOR - TRAVEL SPEED 5KM/HR, CASE CRAWLER EXCAVATOR (S/N 12163-) (S/N 13001-), CASE CRAWLER EXCAVATOR (S/N 15001-) (S/N 23163-), CASE WHEELED EXCAVATOR (S/N 5001-) (S/N 25163-), CASE WHEELED EXCAVATOR (S/N 7501-) (S/N 41163-), CASE CRAWLER EXCAVATOR (S/N 15401-) (S/N 106801-), CASE CRAWLER EXCAVATOR (S/N 74163-74418) (S/N 15201-), CASE TURNTABLE LEVELER CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR (S/N 13501 & AFTER), CASE CRAWLER EXCAVATOR (S/N 15101 & AFTER) (EUROPE), CASE HYDRAULIC CRAWLER EXCAVATOR (BRAZIL), CASE WHEELED EXCAVATOR (S/N 5601 & AFTER), CASE WHEELED EXCAVATOR (S/N 6201 & AFTER), CASE WHEELED EXCAVATOR (S/N 7601 & AFTER), CASE WHEELED EXCAVATOR (S/N 7701 & AFTER), CASE WHEELED EXCAVATOR - SHORT UPPERSTRUCTURE (1.75M) including models 1088, 1088CK, 1088CL, 1088CS, 1088MAXI, 1088P, 1088P4A, 125B, 1288CK, 1288LC, 1288NLC, 1488LC, 1488NLC, 61, 61P, 688, 688C, 688P, 81, 81CK, 81CKE, 81P, 81P4A, 888, 888CK.

Frequently asked questions

What is the part number?

The manufacturer part number is U3230437.

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.