The Multiquip 100KDO7525 Mechanical Seal ST-4125 is a genuine OEM component designed for the ST-4125 submersible pump. As a direct OEM replacement, this seal is manufactured to the exact material grade and compression specifications required for consistent, leak-free pump operation. Sourced directly through Multiquip's authorized parts network, the part delivers the fitment accuracy that keeps your ST-4125 running at full capacity.
Key Features
- OEM-Grade Seal Material — Manufactured to the precise compression and material tolerances required for submersible pump shaft sealing, ensuring no fluid bypass under operating pressure.
- Direct Drop-In Replacement — Engineered to seat and align exactly as the original, allowing straightforward installation without rework or modification to the pump housing.
- Confirmed Fitment for ST-4125 — Verified for use with the Multiquip ST-4125 submersible pump series, so you order with confidence.
- Protects Motor and Pump Internals — A correctly seated mechanical seal prevents water intrusion into the motor cavity, which is the leading cause of premature pump failure in submersible applications.
- Fluid-System Safety — A failed or worn mechanical seal allows pump leakage that can create slip hazards and expose electrical components to moisture — replacing it promptly is a critical safety and reliability measure.
A mechanical seal is the primary barrier between the rotating pump shaft and the surrounding fluid. In a submersible pump like the ST-4125, it prevents water from migrating along the shaft and entering the motor housing. When a mechanical seal wears, cracks, or loses its seating surface, fluid ingress can quickly destroy the motor windings and bearings — often turning a simple seal replacement into a full pump rebuild. Replacing the 100KDO7525 Mechanical Seal ST-4125 at the first sign of leakage is the most cost-effective way to protect the pump's long-term serviceability.
For fitment questions or help confirming this part for your specific unit, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 100KDO7525 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Mechanical 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.
