The Ideal 178941 Gasket Flue Double Lip Seal (90 mm Dia) is a genuine replacement sealing component designed for use in compatible Ideal boiler flue systems. It provides a secure, double-lip seal around 90 mm flue connections to prevent the escape of combustion gases and ensure a tight joint between flue components.

Function & Purpose

This flue gasket creates an airtight and gas-tight seal at flue junctions. The double lip design enhances sealing performance by providing two layers of protection that help contain combustion gases and prevent leaks at connection points. A reliable flue seal supports safe boiler operation, reduces the risk of gas leakage into living spaces, and maintains correct flue performance.

Compatibility

The 178941 flue gasket is engineered to match original equipment specifications for boilers and flue installations requiring a 90 mm diameter double lip seal. It is designed for accurate fitment and dependable sealing when installed in compatible flue systems.

Build Quality

As an authentic Ideal spare part, this flue gasket is manufactured to high quality standards. The materials are selected for resilience to heat, pressure, and exposure to combustion gases, ensuring long-lasting sealing performance under typical operating conditions.

Ideal Applications

This flue gasket is ideal for heating engineers, installers, and service technicians performing flue assembly, maintenance, or repair work. It is particularly useful when flue connections are leaking, poorly sealed, or require part replacement to restore safe and efficient exhaust performance.