The Wacker Neuson is a genuine OEM O-Ring designed for the HSH700, HSH650, CUB400, and CUB700 series hydronic surface heaters and indirect fired air heaters, as well as MC5200 mobile drying systems. As a direct OEM replacement, this O-Ring is manufactured to the exact material and dimensional specifications of the original part, ensuring a proper seal within the system. Confirm your model number before ordering — this O-Ring fits across multiple configurations including skid-mounted, portable, and mobile variants of the CUB400 and CUB700 series.
Key Features
- OEM-Grade Sealing Material — Manufactured to the original compound and durometer specification, delivering the compression resistance and chemical compatibility required for diesel-fired heating equipment.
- Drop-In Replacement — Matches the original O-Ring groove dimensions exactly, seating correctly without stretching or modification during installation.
- Broad Fitment Across Heater Lines — Compatible with HSH700, HSH650, CUB400, and CUB700 series units in skid-mounted, portable, and mobile configurations, as well as MC5200 mobile drying systems.
- Maintains System Pressure Integrity — A correctly seated O-Ring prevents fluid or air leaks at critical connection points, keeping the heating system operating at its designed output and efficiency.
- Fuel and Fluid System Safety — In diesel-fired heating applications, a failed or degraded O-Ring can allow fuel or heated fluid to escape at joints — replacing a worn O-Ring promptly is an important part of safe system maintenance.
An O-Ring is a circular elastomeric seal used at joints, fittings, and connections throughout a heating system to prevent the leakage of fluids or pressurized air. In hydronic surface heaters and indirect fired air heaters like the HSH and CUB series, O-Rings are found at critical points in the fuel delivery, fluid circulation, and plumbing connections. When an O-Ring hardens, cracks, or becomes compressed beyond its service life, it loses its ability to form a tight seal — leading to leaks, pressure loss, and reduced heating performance. Replacing a worn O-Ring with the correct OEM part restores the integrity of the seal and protects surrounding components from damage.
Part Details
| Part Number | 5000172662 |
|---|---|
| Old Part Number | 0172662 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| Skid Mounted-Indirect Fired Ai r Heat, Diesel | CUB700 | 5000620213, 5000620687, 5000620207 |
| Skid Mounted-Indirect Fired Ai r Heater, Diesel | CUB400 | 5000620211, 5000620212, 5000620615 |
| HSH650 | HSH650 | 5000620991 |
| Mobile Drying System | MC5200 | 5000620201, 5000620232 |
| Mobile Indirect Fired Air Heat er, Diesel w/Genset | CUB700GM | 5000620759 |
| Mobile Indirect Fired Air Heat er, Diesel | CUB700M | 5000620758 |
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.
