The Multiquip 0489352550 Casing O-Ring is a genuine OEM replacement designed for Multiquip centrifugal and dewatering pump models including QP303B, QP205SH, QPT305SLT, QP305SLT, QPT205SLT, QP205SLT, and QP303H. As a factory-sourced component, this O-ring is manufactured to the exact material grade and dimensional tolerances required to maintain a proper casing seal across the full operating pressure range of these pumps. Sourcing the correct OEM seal is critical — an improperly fitting O-ring can lead to pressure loss, leakage at the casing joint, and accelerated wear of surrounding components. DHS Equipment supplies this part direct so you can get your pump back in service with confidence.
Key Features
- OEM Material Grade: — Manufactured to the exact compound and durometer specification required for casing sealing duty on Multiquip centrifugal pumps, maintaining integrity under pump operating pressures.
- Direct Casing Fit: — Sized and profiled to seat correctly in the casing groove on compatible QP-series pump models, ensuring full compression and a leak-free joint on reassembly.
- Broad QP-Series Compatibility: — Confirmed fitment for QP303B, QP205SH, QP305SLT, QPT305SLT, QPT205SLT, QP205SLT, and QP303H centrifugal pump models.
- Leak Prevention: — A correctly seated casing O-ring holds the pressure boundary between pump halves; a degraded or missing seal causes immediate discharge-side leakage and loss of prime.
- Genuine OEM Sourcing: — Supplied as an authorized Multiquip OEM component, ensuring the part you install matches the original design intent for your pump model.
The casing O-ring forms the primary pressure seal at the joint between the pump's volute casing halves or between the casing and the impeller cover. It prevents water from bypassing the impeller and escaping at the casing seam, which is essential for maintaining prime and achieving rated discharge pressure. When this O-ring deteriorates — through compression set, chemical degradation, or physical damage — the pump loses its ability to hold suction and discharge efficiency drops sharply, often making the pump appear to have a far more serious internal fault than a simple seal replacement.
Part Details
| Part Number | 0489352550 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Casing O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Centrifugal Pumps | QP303B |
| Centrifugal Pumps | QP205SH |
| Centrifugal Pumps | QPT305SLT |
| Centrifugal Pumps | QP305SLT |
| Centrifugal Pumps | QPT205SLT |
| Centrifugal Pumps | QP205SLT |
| Centrifugal Pumps | QP303H |
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.
