The Multiquip 02041023403 is a genuine OEM O Ring DNO ST-4100 6150 designed for the ST-4100 concrete pump. Sourced directly from Multiquip, this sealing ring meets the exact material and dimensional specifications of the original component. Confirm your model code before ordering — this part is validated for ST-4100 series concrete pumps.
Key Features
- Genuine OEM Sealing Material — Manufactured to the original compound and durometer spec, ensuring correct compression and long-term resistance to hydraulic fluid and pressure cycling in concrete pump applications.
- Drop-In Replacement — Matches the original ring profile and cross-section for a direct install without machining or modification to the seating surface.
- Validated for ST-4100 Concrete Pumps — Fitment confirmed for ST-4100 series equipment; always cross-reference your model code to ensure compatibility.
- Maintains Hydraulic Integrity — A correctly seated O-ring keeps internal pressure stable and prevents fluid bypass, which is critical to consistent concrete pump output and stroke performance.
- Leak Prevention — Worn or deformed O-rings allow fluid ingress or egress at critical junctions; replacing with the correct OEM ring eliminates that failure point before it causes broader hydraulic damage.
An O-ring is a precision sealing element installed at the junction between hydraulic or fluid-carrying components to prevent leaks under pressure. In concrete pumps like the ST-4100, O-rings are used throughout the hydraulic system and fluid passages to maintain pressure differentials and keep contaminants out. When an O-ring wears, cracks, or takes a permanent set, it loses its ability to seal — leading to fluid leaks, pressure loss, and eventual damage to surrounding components if left unaddressed.
DHS Equipment supplies genuine Multiquip OEM parts to keep your equipment running to specification. For fitment questions or assistance confirming compatibility, contact our parts team directly.
Part Details
| Part Number | 02041023403 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | O Ring DNO ST-4100 6150 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST-4100 | ST-4100 |
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.
