Description
The Lochinvar & A.O. Smith 100208103 is an OEM replacement flange gasket designed to deliver a secure, leak-free seal in compatible water heater and boiler applications. Engineered to the original manufacturer’s specifications, this 7/8″ x 1 7/8″ gasket ensures a precise fit at flange connections, helping to maintain system integrity and prevent costly water leaks or pressure loss.
Key Features
- OEM part number 100208103 — direct factory replacement
- Dimensions: 7/8″ x 1 7/8″ for accurate, drop-in installation
- Designed for use with Lochinvar and A.O. Smith water heaters and boilers
- Provides a reliable, leak-free seal at flange connection points
- Manufactured to original equipment specifications for consistent performance
- Helps restore and maintain proper system pressure and efficiency
Application
This flange gasket is intended for use as a replacement part in Lochinvar and A.O. Smith hydronic and water heating equipment. It is ideal for service technicians performing routine maintenance, repairs, or component replacements where flange sealing integrity is critical.
Why Choose OEM Parts?
Using genuine OEM replacement components like the 100208103 ensures compatibility, longevity, and warranty compliance. Aftermarket substitutes may not meet the precise dimensional or material tolerances required for safe and efficient operation.







Reviews
There are no reviews yet.