The Multiquip 1027622 Kit, Mechanical Seal, Sleeve, O-Rings is a genuine OEM assembly designed for ST6125D and ST4125D submersible clean water pumps. This kit delivers everything needed to restore the pump's internal sealing system in a single service package, sourced directly from Multiquip to ensure correct fit and material specification. It is the recommended replacement for worn or leaking seal components on these submersible units, keeping the pump running at rated performance and preventing water ingress into the motor housing. Verify your model code against ST6125D and ST4125D before ordering to confirm compatibility.
Key Features
- Complete OEM Seal Assembly — Includes the mechanical seal, sleeve, and O-rings as a matched set, eliminating the guesswork of sourcing individual components separately.
- Genuine Multiquip OEM Part — Manufactured to the same material grades and dimensional tolerances as the original components, ensuring proper compression and sealing contact between mating surfaces.
- Direct-Fit for ST-Series Submersible Pumps — Engineered specifically for the ST6125D and ST4125D clean water submersible pumps; installs in the same position as the factory seal assembly without modification.
- Protects the Motor from Water Intrusion — A properly seated mechanical seal prevents pump fluid from migrating into the motor housing, which is the leading cause of motor failure in submersible applications.
- Critical for Safe Electrical Operation — In submersible pumps, seal integrity is directly tied to motor safety; replacing a compromised seal with a correct OEM kit reduces the risk of moisture-related electrical faults.
The mechanical seal in a submersible pump sits at the interface between the rotating impeller shaft and the motor housing, creating a pressure-resistant barrier that keeps water out of the motor cavity. Over time, the seal faces wear, the sleeve can score or corrode, and the O-rings lose their elasticity — any of these failures allows water to migrate toward the motor windings, leading to reduced efficiency or total motor failure. Replacing the seal, sleeve, and O-rings together as a complete kit restores full sealing integrity and is the correct approach whenever a submersible pump shows signs of leakage or unexplained motor overheating.
Part Details
| Part Number | 1027622 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Kit, Mechanical Seal, Sleeve, O-Rings |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Submersible Pumps Clean Water | ST6125D |
| MQ Submersible Pumps Clean Water | ST4125D |
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.
