The Multiquip ST6125D0204 O-Ring Dia.35x190 is a genuine OEM seal designed for ST4125D and ST6125D clean water submersible pumps. As a direct Multiquip OEM component, this O-ring is manufactured to the exact material grade and dimensional specification required for a proper sealing fit in the pump assembly. Confirmed fitment covers the ST4125D and ST6125D submersible pump models, so verify your model before ordering to ensure compatibility.
Key Features
- Exact Dimensional Spec: — Produced to the Dia.35x190 measurement required for correct compression and sealing in the pump housing.
- Genuine OEM Sealing Material: — Manufactured from the OEM-specified elastomer compound to withstand continuous submersion and water pressure demands.
- Direct Replacement Fit: — Seats into the same groove and bore profile as the original component, requiring no trimming or modification to install.
- Confirmed Model Fitment: — Compatible with ST4125D and ST6125D Multiquip clean water submersible pump models.
- Leak Prevention: — A correctly seated O-ring at this diameter maintains the pump's internal pressure integrity; a worn or cracked seal allows water ingress into the motor housing, leading to pump failure.
- Fluid System Safety: — Proper sealing prevents internal short-circuit risk from water intrusion into the motor cavity, protecting both the equipment and the operator.
An O-ring at this location in a submersible pump acts as a static pressure seal between mating housing components, preventing water from bypassing the intended flow path and entering protected areas of the pump. When the O-ring degrades — through compression set, cracking, or swelling — the seal is lost, allowing water to migrate into the motor housing and cause electrical or mechanical damage. Replacing a worn O-ring with the correct OEM part restores the pressure boundary and protects the pump's internal components during operation.
Part Details
| Part Number | ST6125D0204 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | O-Ring Dia.35x190 |
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.
