
Maintaining a secure, airtight seal within your heating unit is critical to preventing combustion gas leaks and ensuring optimal thermal output. This cover plate gasket, identified by part number 383-500-255, is engineered specifically to provide a precise interface between the cover plate and the main body of Weil McLain Ultra Gas boiler models 155, 230, and 310.
This component operates by compressing uniformly between mating surfaces to compensate for minor irregularities in the casting or plate metal. By effectively blocking air infiltration and exhaust leakage, the gasket prevents pressure drops within the heat exchanger chamber, which preserves the manufacturer-intended draft and combustion efficiency of the system.
Key System Performance Baselines:
- Leak-Free Integrity: Ensures a hermetic seal against the boiler casting to prevent flue gas emissions.
- Thermal Efficiency: Maintains internal combustion pressure to ensure consistent heat transfer throughout the system.
- OEM Specification: Built to precise factory dimensions for the Ultra Gas series to eliminate fitting guesswork.
- Durable Composition: Manufactured from resilient, heat-resistant materials designed to withstand recurring temperature fluctuations.
⚠️ Application Profile: Specifically compatible with Weil McLain Ultra Gas boiler models 155, 230, and 310. Recommended for use during heat exchanger maintenance, cover plate removal, or when troubleshooting combustion system pressure loss.
| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 383-500-255 |
| Model Designation | Ultra Gas 155, 230, 310 |
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
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- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
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