The Multiquip 3350 Internal Retaining Ring is a genuine OEM component designed for Multiquip MQD2H, MQD3H, MQD2HA, and MQD3HA diaphragm pumps. Sourced directly from Multiquip, this retaining ring meets the exact specifications required to maintain proper internal assembly alignment and component retention. It is a direct replacement for the original part, confirmed for fitment across the MQD2H and MQD3H diaphragm pump families. When you need a verified OEM solution for your Multiquip diaphragm pump, part number 3350 is the correct choice.
Key Features
- Genuine OEM Retention Integrity — Manufactured to Multiquip's exact dimensional tolerances, ensuring correct seating force and secure component retention inside the pump housing.
- Drop-In Internal Fit — Designed to seat directly into the internal groove of the pump assembly without reworking or resizing the bore, preserving the original component stack-up.
- Confirmed Diaphragm Pump Fitment — Verified for use with MQD2H, MQD3H, MQD2HA, and MQD3HA Multiquip diaphragm pump models.
- Prevents Internal Component Migration — A correctly installed retaining ring keeps internal pump components properly positioned under operating loads, preventing displacement that can lead to pump inefficiency or internal damage.
- Fluid System Safety Assurance — In pump applications handling liquids under pressure, a failed or missing retaining ring can cause internal component separation and uncontrolled fluid discharge — using the correct OEM ring maintains safe containment.
An internal retaining ring is a precision-formed circular fastener that snaps into a machined groove inside a bore to axially secure shafts, bearings, or other internal components in place. In a diaphragm pump, it holds critical internal parts in their correct position throughout the pumping cycle, resisting the repetitive pressure forces generated during operation. When a retaining ring becomes worn, deformed, or broken, internal components can shift or separate, causing pump inefficiency, accelerated wear on surrounding parts, or complete pump failure.
Part Details
| Part Number | 3350 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Internal Retaining Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2H |
| Diaphragm Pumps | MQD3H |
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
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.
