Patterson-Kelley 26-0000-0611 High Temperature Sight Glass Seal

The Patterson-Kelley 26-0000-0611 High Temperature Sight Glass Seal is a sealing element used to maintain a tight interface between the sight glass and its mounting surface in boiler assemblies. It is built to withstand elevated heat conditions and keep the glass securely seated within the holder while maintaining separation between internal chamber conditions and the external environment. In HVAC systems, it is commonly applied in boiler units where it is positioned around the sight glass section to support stable sealing during operation. The seal is integrated into the inspection port assembly, maintain proper alignment.