The Wacker Neuson O-Ring is a genuine OEM sealing component designed for the HSH hydronic surface heater and CUB indirect fired air heater series, including the HSH350, HSH380B, HSH380S, HSH650, HSH700, CUB400, and CUB700 models, as well as MC5200 Mobile Drying Systems. As a genuine Wacker Neuson part, the is manufactured to exact material and dimensional specifications, ensuring consistent sealing performance across every applicable unit. This O-Ring is a direct replacement for worn or damaged seals and installs without modification into its original seat. Confirm your model number before ordering to ensure compatibility with your specific configuration.
Key Features
- Precision Seal Geometry — Manufactured to OEM material and dimensional tolerances, ensuring correct compression and fluid-tight sealing specific to Wacker Neuson hydronic and indirect-fired heating systems.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson; part number 5000172658 is the same component used in original production builds.
- Broad Heating Equipment Fitment — Compatible across the HSH350, HSH380B, HSH380S, HSH650, and HSH700 hydronic surface heater series, CUB400 and CUB700 indirect fired air heaters, and MC5200 Mobile Drying Systems.
- Leak-Free System Integrity — A correctly seated O-Ring maintains pressure containment within fuel, coolant, or fluid circuits; a degraded seal leads to fluid leaks, pressure loss, and potential system shutdown.
- Fuel and Fluid System Safety — In heating equipment, a failed O-Ring in a fuel or burner circuit can result in fuel weepage or ignition hazards — replacing a worn seal promptly is a critical maintenance step.
An O-Ring is a circular elastomeric seal fitted into a groove between two mating components, creating a pressure-tight barrier that prevents fluid or gas from escaping the joint. In hydronic surface heaters and indirect fired air heaters, O-Rings are used throughout fuel delivery, coolant, and hydraulic circuits to maintain system pressure and prevent leaks. When an O-Ring hardens, cracks, or deforms from heat cycling or chemical exposure, the seal fails — leading to fluid loss, reduced system efficiency, or a complete operational fault that takes the heater out of service.
Part Details
| Part Number | 5000172658 |
|---|---|
| Old Part Number | 0172658 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| 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 |
| HSH380s | HSH 380S | 5100054643 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359 |
| 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.
