O-Ring

Enhance your heavy equipment’s performance with the Case Construction O-Ring #155204A1. Designed for durability and precision, this essential part ensures optimal sealing and reliability, keeping your machinery running smoothly in demanding conditions. Perfect for maintenance and repairs.

Compatible equipment

This part fits CASE CRAWLER EXCAVATOR, 6UZ1XASS01 - ISUZU DIESEL ENGINE - TIER 4B, CASE CRAWLER EXCAVATOR (NORTH AMERICA), CRAWLER EXCAVATOR TIER 3, CRAWLER EXCAVATOR TIER 3 (EU), CRAWLER EXCAVATOR - TIER 4 (NA), CRAWLER EXCAVATOR STD W/BLADE - TIER 4B (NA), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA), CRAWLER EXCAVATOR (NORTH AMERICA), CRAWLER EXCAVATOR - TIER 4 (NON-EU), CRAWLER EXCAVATOR TIER 3 (NA), CASE STANDARD CRAWLER EXCAVATOR (NORTH AMERICA), CASE LONG REACH CRAWLER EXCAVATOR (NORTH AMERICA), CASE NARROW EXCAVATOR (NORTH AMERICA) ~DAC0721850 & ASN DAC211851, CRAWLER EXCAVATOR TIER 4 (NA), LONG CARRIAGE - LONG REACH - CRAWLER EXCAVATOR - TIER 4B (NA), CRAWLER EXCAVATOR TIER 3 - ASN N5SAP7001 - (NA), CASE CRAWLER EXCAVATOR (EUROPE), CRAWLER EXCAVATOR TIER 3 (EU) (DC46B6001 DCH460R3N6EAS7001-), CRAWLER EXCAVATOR - TIER 3 (EUROPE), RETRACTABLE CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA), CRAWLER EXCAVATOR - TIER 4, CRAWLER EXCAVATOR TIER 3 - ASN DAC075K3N8SLA7101, CRAWLER EXCAVATOR TIER 3 (NA) - ASN DAC080K3N8SLA7101 including models 9030, AQ, CX130, CX130B, CX130C, CX130D, CX130D LC, CX135SR, CX145C SR, CX145D SR LC, CX145D SR LC W/BLADE, CX160, CX160B, CX160C, CX160D LC, CX210, CX210B, CX210BLR, CX210BNLC, CX210C LC, CX210C LR, CX210C NLC, CX210LR, CX210N, CX225SR.

Frequently asked questions

What is the part number?

The manufacturer part number is 155204A1.

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.