The Wacker Neuson 5100011440 is a genuine OEM O-Ring Seal designed for the RC50, RC110, and RD18 series single-drum soil compactors and tandem rollers. As a direct OEM replacement, this seal is manufactured to the exact material and dimensional specifications used in original production, ensuring a proper fit within the hydraulic or fluid system where it is installed. Fitment covers a wide range of RD18 variants — including the RD18-80, RD18-100, RD18-100c, and RD18-100 C configurations — as well as RC50, RC50p, RC110, and RC110p models in both ROPS and CAB configurations. Confirm your machine's model and serial number against the fitment list before ordering to ensure part 5100011440 is the correct seal for your application.
Key Features
- Genuine OEM Material Specification — Manufactured to the precise compound hardness and cross-section dimensions specified for this seal position, ensuring correct compression and a leak-free seating in the original groove.
- Drop-In Replacement — Seats directly into the existing groove without rework, matching the original seal's profile so reassembly follows standard service procedure.
- Broad Fitment Across RC and RD Families — Compatible with RC50, RC50p, RC110, and RC110p single-drum soil compactors and RD18-80, RD18-100, RD18-100c, and RD18-100 C tandem rollers in ROPS and CAB configurations.
- Fluid Containment Integrity — A correctly seated O-Ring Seal prevents internal and external leaks that can lead to hydraulic pressure loss, fluid contamination, or accelerated wear on surrounding components.
- Fluid System Safety — Hydraulic and fluid system seals that are degraded or incorrectly sized can result in uncontrolled fluid loss or pressure failure; using the correct OEM seal maintains system integrity and safe operating pressure.
An O-Ring Seal creates a compression-based barrier between mating components in a hydraulic or fluid circuit, preventing fluid from bypassing the sealing surface under operating pressure. In compaction equipment like the RC and RD series, these seals are typically found at hydraulic fittings, valve bodies, pump housings, and fluid ports where maintaining pressure and preventing contamination is critical to machine performance. When an O-Ring Seal degrades — through heat cycling, chemical exposure, or simple age — it loses its ability to compress evenly, allowing fluid to weep or leak, which can cause hydraulic pressure drop, overheating, or component damage if left unaddressed.
Part Details
| Part Number | 5100011440 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RC110p ROPS | RC110p ROPS | 5100067706 |
| RD18-80 | RD18-80 | 5100047360, 5100011382, 5100055774 |
| RC50 | RC50 DPF CAB | 5100064255 |
| RC110 CAB | RC110 CAB | 5100067705 |
| RC110p CAB | RC110p CAB | 5100067707 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD18 | RD18-100.3 | 5100055947 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RC110 ROPS | RC110 ROPS | 5100067704 |
| RC50p | RC50p DPF CAB | 5100064257 |
| RD18-100 | RD18-100 | 5100055775, 5100011383, 5100047361 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RC50 | RC50 DPF ROPS | 5100064256 |
| RC50p | RC50p DPF ROPS | 5100064258 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
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.
