The Wacker Neuson is a genuine OEM O-Ring designed for the HSH380S, E1250S, E1250P, E2200, and E3000 series hydronic surface heaters and ground heaters. As a direct factory replacement, this O-Ring maintains the fluid-tight seals that keep these heating systems operating at the pressures and temperatures they were engineered to handle. Sourced directly from Wacker Neuson, part number is built to the same material and dimensional standards as the original component. Confirm your model number before ordering to ensure correct fitment across this broad range of compatible units.
Key Features
- OEM-Grade Seal Material — Manufactured to Wacker Neuson's original compound and durometer specifications, ensuring correct compression set and resistance to the glycol-based fluids used in hydronic heating systems.
- Drop-In Replacement — Matches the original O-Ring groove dimensions exactly, seating without modification in the same port or fitting location as the factory part.
- Broad Hydronic Heater Compatibility — Fits HSH380S (natural gas/propane and diesel configurations), E1250S, E1250P, E2200, and E3000 ground heater series, including generator and lift bail variants.
- Leak Prevention at the Source — A correctly seated O-Ring maintains system pressure integrity; a degraded or damaged seal allows fluid loss that can cause overheating, inconsistent heat output, and damage to pump and heat exchanger components.
- Fluid-System Safety — Proper sealing in pressurized hydronic circuits is essential to prevent uncontrolled fluid release, which presents both a burn hazard and a slip hazard on the worksite.
An O-Ring in a hydronic heating system acts as a pressure seal at fluid connections, fittings, and component interfaces throughout the heating loop. It prevents the glycol-water mixture from leaking out of the system, which is critical for maintaining both heat transfer efficiency and operating pressure. When an O-Ring ages, hardens, or becomes chemically degraded, it loses its ability to conform to mating surfaces under pressure — leading to visible leaks, pressure loss, and potential damage to pumps and heat exchange components downstream.
Part Details
| Part Number | 5200018124 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E3000 Ground Heater, 3kW Gen, TC | E3000 | 5100017807, 5100017809, 5100017806, 5100017808, 5100017810, 5100017811, 5100017801 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359 |
| E2200 GROUND HEATER, 3kW GENERATOR | E2200 | 5100017448, 5100017449 |
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.
