Description
The Lochinvar & A.O. Smith 100306939 is an OEM replacement manhole gasket designed to maintain a secure, leak-free seal on compatible A.O. Smith commercial water heaters. Proper manhole gasket integrity is critical to safe boiler and water heater operation — a compromised gasket can lead to pressure loss, water leaks, and costly downtime.
Product Overview
This gasket is engineered to exact OEM specifications, ensuring a precise fit and long-lasting performance. Replacing a worn or damaged manhole gasket with a genuine OEM part helps restore proper vessel sealing and supports safe, efficient system operation.
Key Features
- OEM replacement part for Lochinvar & A.O. Smith commercial water heaters
- Manhole gasket dimensions: 12″ x 16″
- Designed for a precise, leak-free fit on compatible AOS units
- Manufactured to original equipment specifications for reliable performance
- Helps maintain pressure integrity and safe vessel operation
Specifications
- SKU: 100306939
- Part Type: Manhole Gasket
- Dimensions: 12″ x 16″
- Brand: Lochinvar & A.O. Smith
- Application: AOS Commercial Water Heaters
Application
This manhole gasket is intended for use during routine maintenance, inspection, or repair of commercial water heater vessels. Always consult the equipment service manual and follow proper lockout/tagout procedures before performing any maintenance on pressurized systems.







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