The Wacker Neuson Seal is a genuine OEM component designed for the HI750, HI900, and HI260 series indirect-fired air heaters. As a direct OEM replacement, this seal is sourced from Wacker Neuson and manufactured to the same specifications as the original part installed at the factory. It fits a broad range of HI-series configurations including diesel, natural gas, LP, and dual-fuel models, as well as skid-mounted and trailer-mounted variants across both the HI750 and HI900 families. Verifying your model number against the fitment list before ordering ensures a correct, hassle-free installation.
Key Features
- OEM Material Integrity — Manufactured to Wacker Neuson's original material and compression specifications, ensuring the seal performs correctly under the thermal and pressure cycling conditions inside an indirect-fired air heater.
- Drop-In Replacement — Matches the original seal geometry exactly, so it seats into the same housing and mating surfaces without rework or adjustment.
- Broad HI-Series Compatibility — Fits HI750 (diesel, natural gas, LP, and dual-fuel configurations), HI900 (diesel, natural gas, dual-fuel, surge brake, and skid-mounted variants), and HI260 oil-fired models.
- Combustion Circuit Integrity — A properly sealing seal keeps exhaust gases and heated airflow properly routed through the heat exchanger, maintaining rated BTU output and preventing hot-gas bypass that reduces heater efficiency.
- Fuel and Emission Safety Relevance — In indirect-fired heater applications, a degraded seal can allow combustion gases to leak into the conditioned airstream. Replacing a worn seal with a genuine OEM part restores the separation between the combustion circuit and the clean-air output.
In an indirect-fired air heater, seals create the critical boundary between the combustion chamber — where fuel burns and exhaust gases are generated — and the clean airstream that is discharged into the work area or building. This separation is what makes indirect-fired heaters safe for occupied spaces, since no combustion byproducts enter the heated air supply. When a seal degrades, cracks, or loses its compression, that boundary breaks down: heater efficiency drops, output temperatures become inconsistent, and combustion gases can migrate into the output airflow. Replacing the seal at the first sign of wear restores proper operation and maintains the clean-air output the HI series is designed to deliver.
Part Details
| Part Number | 5000182243 |
|---|---|
| Old Part Number | 0182243 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI750 DGM HEATER-INDIRECT | HI750GM | 5000620859, 5000620930 |
| Mobile Indirect Fired Air Heat er, Diesel | HI750D | 5000620856, 5000620923, 5000620924 |
| HI 750GM HD-Mobile Indirect Ai r Heater-Surge, -40 | HI750GMHD | 5000620969 |
| HI750G HEATER-INDIRECT | HI750G | 5000620857, 5000620928, 5000620929 |
| Factory-Installed Options | Factory-Installed Options | 5200004152 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 5200014222, 5200014165, 5200014166 |
| HI 900D Heater-Indirect | HI900D | 5200014158, 5200014159, 5200014160 |
| Skid Indirect Air Heaters Natu ral Gas | HI900G | 5200014161 |
| HI 900G Heater-Indirect,3x16 | HI900 G | 5200014163, 5200014164 |
| HI260 HEATER,OIL WITH TANK | HI260 | 5200018503 |
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.
