The Multiquip 100KDO7526 Oil Seal ST-4125 is a genuine OEM oil seal designed for the ST-4125 swing tube concrete pump. As a factory-sourced component, it meets the original material and dimensional specifications required to maintain a proper seal under the demanding pressures of concrete pumping operations. This part is confirmed for use on the ST-4125 and is the correct direct-replacement seal for that model. Sourcing the genuine Multiquip 100KDO7526 ensures you are installing a part built to the exact tolerances the machine was engineered around.
Key Features
- OEM-Grade Sealing Material — Manufactured to the original compound and durometer specification, delivering the compression and chemical resistance needed to contain hydraulic and lubricating fluids in a concrete pump environment.
- Exact Dimensional Match — Machined to the precise bore, shaft, and width dimensions of the ST-4125 seal cavity, allowing the seal to seat and retain correctly without rework or shimming.
- Confirmed ST-4125 Fitment — Verified for the Multiquip ST-4125 swing tube concrete pump series; cross-reference part number 100KDO7526 against your machine's parts manual before ordering.
- Leak Prevention Under Pump Pressure — A correctly functioning oil seal keeps lubricant in and contaminants out, protecting rotating and reciprocating components from accelerated wear; a failed seal leads to fluid loss, overheating, and pump component damage.
- Genuine Multiquip OEM Component — Sourced directly through the Multiquip OEM parts network, ensuring traceability and consistency with the original design intent of the ST-4125.
An oil seal creates a dynamic barrier between a rotating or reciprocating shaft and the surrounding housing, preventing lubricating oil or grease from escaping while blocking dirt, water, and debris from entering the bearing or gear cavity. In a concrete pump like the ST-4125, seals are exposed to vibration, pressure fluctuation, and abrasive materials, making material integrity and dimensional accuracy critical. When an oil seal degrades or fails, fluid loss accelerates wear on adjacent components and can lead to pump seizure or costly internal damage if not addressed promptly.
Part Details
| Part Number | 100KDO7526 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Oil Seal ST-4125 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST-4125 | ST-4125 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
