904 Flue Liner

Choose a durable 904 flue liner for stoves, fires, and solid-fuel appliances where long-lasting chimney protection is essential. This flexible stainless steel chimney liner is available in a choice of lengths and diameters, helping you select the right fit for your installation.

Made from 904 grade stainless steel, this flue liner is designed to withstand high temperatures and offer excellent corrosion resistance. It is suitable for seasoned wood, smokeless fuels and multi-fuel appliances, making it a reliable choice for demanding domestic chimney systems.

The flexible construction helps the liner pass through existing chimney bends more easily during installation, while reducing the risk of damage to the inner wall. A smooth internal surface supports efficient drainage and helps limit the build-up of soot and tar when the flue is correctly installed, swept and maintained.

TecnoFlex 904 stainless steel chimney liner is manufactured with a secure lock between layers to help prevent the liner from pulling apart during installation. It is tested and approved to EN 1856 2 and designed for continuous firing temperatures up to 600°C.

Correct installation is essential for safe flue performance. Poorly installed liners can increase soot deposits and may raise the risk of a chimney fire. Always ensure your flue liner is fitted, checked and approved by a competent professional. For help choosing the correct diameter or length, please contact our team.

904 Flue Liner Features

• Inner skin thickness: 0.12mm
• Outer skin thickness: 0.12mm
• Manufactured to: BS EN ISO 9001 2000
• Tested and approved by: TÜV to EN 1856 2
• Continuous firing temperature: 600°C
• CE mark TÜV certificate number: 0036 CPD 9195 025 Rev 02, Model 2
• Suitable fuels: Seasoned wood, multi-fuels and smokeless fuels
• Minimum lifespan: 20 years
• Approval: HETAS approved