The Wacker Neuson O-Ring is a genuine OEM sealing component designed for the E1250S, E1250P, E3000, E2200, and HSH380 series hydronic surface heaters and ground heaters. As a direct OEM replacement, it is manufactured to the exact material grade and dimensional tolerances specified for these machines, ensuring a proper seal without leaks or bypass. This O-Ring fits a wide range of configurations across the E1250, E3000, and HSH380 families, including LP/NG, diesel, and generator-equipped variants. Keeping a verified OEM seal in place is essential to maintaining the fluid integrity and safe operation of your heating system.
Key Features
- OEM-Grade Sealing Material — Manufactured to the exact compound and durometer specification required for the fluid pressures and temperatures found in Wacker Neuson hydronic heating systems.
- Drop-In Replacement — Matches the original cross-section and diameter precisely, seating correctly in the existing groove without modification to fittings or housing.
- Broad Fitment Across Heating Families — Compatible with E1250S, E1250P, E3000, E2200, and HSH380S/HSH380B series units in LP/NG, diesel, and generator-equipped configurations.
- Leak-Free Fluid Circuit — A correctly seated O-Ring maintains system pressure and prevents fluid loss that can cause inconsistent heat output or damage to pump and heating components.
- Fluid System Safety — A failed or degraded O-Ring can allow heated fluid to escape under pressure; replacing with the correct OEM part restores the sealed system integrity required for safe operation.
An O-Ring serves as a precision sealing element within the fluid circuit of a hydronic heater, preventing coolant or heat-transfer fluid from leaking at joints, fittings, and component interfaces. When it is in good condition, the system maintains the pressure and flow needed to deliver consistent, controlled heat output across the connected ground or surface heating application. When an O-Ring cracks, hardens, or deforms with age and heat cycling, it allows fluid to bypass the seal — leading to pressure loss, reduced heating performance, and potential damage to surrounding components if left unaddressed.
Part Details
| Part Number | 5100024278 |
|---|---|
| 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, 5100025046, 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.
