The Wacker Neuson is a genuine OEM O-Ring designed for the E1250S and E1250P hydronic heaters, HSH380S and HSH380B hydronic surface heaters, and HI1000 indirect air heater series. As a direct OEM replacement, it is manufactured to the same specifications as the original component installed at the factory, ensuring a consistent seal without modification. This O-Ring fits both LP/NG and diesel configurations across the E1250 and HSH380 families, as well as the E3000 ground heater, making it a versatile service part for Wacker Neuson heating equipment fleets.
Key Features
- OEM Sealing Integrity — Manufactured to the original compression and material tolerances required for fluid and pressure containment in Wacker Neuson heating systems.
- Drop-In Replacement — Matches the original O-Ring geometry and groove dimensions, seating correctly without rework or adaptation during reassembly.
- Broad Heater Family Coverage — Compatible with the E1250S, E1250P, E3000, HSH380S, HSH380B, and HI1000 series, covering LP/NG, diesel, and electric configurations.
- Leak Prevention — A correctly seated O-Ring maintains system pressure and prevents fluid or fuel pathway leaks that can compromise heater output and efficiency.
- Fuel and Fluid System Safety — In heating equipment, a failed or hardened O-Ring can allow fuel or heated fluid to escape; replacing with a genuine OEM part restores the designed containment standard.
An O-Ring is a molded loop seal used at connection points in fluid or fuel circuits to prevent leakage under pressure or temperature cycling. In heating equipment like hydronic surface heaters and indirect air heaters, O-Rings are exposed to thermal expansion, contraction, and contact with fuels or heated liquids, which can cause them to harden, crack, or deform over time. A degraded O-Ring leads to seepage or pressure loss at the joint, reducing heater efficiency and potentially creating a safety concern — making timely replacement with a correctly specified part essential to safe, consistent operation.
Part Details
| Part Number | 5100015677 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| E3000 Ground Heater, 6kW Gen LB TC | E3000 | 5100025046, 5100025045 |
| HSH 380S-Natural Gas/Propane, w/Generator | HSH380S | 5200012370, 5200012371 |
| HI1000 Indirect Air Heater, DGM, Electric Break | HI1000DGM | 5200011234, 5200011235, 5100049275, 5100049276 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359 |
| HI1000 | HI1000 | 5100049274 |
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.
