The Multiquip ST4125D0324 is a genuine OEM O-Ring Dia. 3.1x105 designed for ST4125D and ST6125D clean water submersible pumps. As a factory-authorized component, it delivers the exact material grade and dimensional tolerancing needed to maintain a proper fluid seal within the pump assembly. This O-ring is a direct fit for ST4125D and ST6125D series units, requiring no adaptation for installation. Keeping a correct seal in place is critical to preventing water ingress, pressure loss, and premature pump wear on your submersible equipment.
Key Features
- Genuine OEM Sealing Material — Manufactured to Multiquip's exact compound and durometer specifications, ensuring full compression and seal integrity under continuous submersible pump operating conditions.
- Exact Dimensional Fit — Sized at Dia. 3.1x105 to seat correctly in the designed groove without stretching or pinching during assembly, maintaining consistent sealing pressure.
- Confirmed Fitment for ST4125D and ST6125D — Verified for Multiquip ST4125D and ST6125D clean water submersible pump models, so you can order with confidence.
- Leak Prevention at the Source — A correctly seated O-ring keeps water from bypassing internal pump chambers, protecting motor windings and maintaining rated flow output.
- Fast Maintenance Turnaround — Seals are a common service item during pump disassembly and inspection; having the correct OEM O-ring on hand keeps pump rebuilds on schedule.
An O-ring is a circular elastomeric seal that fits into a machined groove to prevent fluid from passing between mating components. In a submersible pump, O-rings are critical at every joint where water pressure is present — a degraded or incorrectly sized O-ring allows water to bypass internal seals, which can result in reduced pump output, flooding of the motor housing, and eventual failure of the unit. Replacing worn O-rings with the correct OEM part during routine service or after disassembly is one of the most straightforward ways to restore full pump performance and extend service life.
Part Details
| Part Number | ST4125D0324 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | O-Ring Dia. 3.1x105 |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Submersible Pumps Clean Water | ST4125D |
| MQ Submersible Pumps Clean Water | ST6125D |
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.
