Silicone / Glass Fibre

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  • Double Layer Silicone Air Ducting Silicone Hose Auto Silicone Hoses 25mm 1 Metre Black

    Double Layer Silicone Air Ducting

    -70°C to +310°C 2 Ply Fiberglass Steel Helix
    From £14.59
    From £14.59

Silicone / Glass Fibre

Our Silicone / Glass Fibre Ducting collection offers superior flexibility, heat resistance, and durability, making it an ideal choice for high-temperature applications. Engineered with a combination of silicone and glass fibre, these ducts provide exceptional performance in demanding environments, such as industrial ventilation, exhaust systems, and heating applications.

The high-strength glass fibre reinforcement enhances the ducting’s structural integrity, while the silicone lining offers excellent thermal stability, ensuring that the ducting remains flexible and resistant to extreme temperatures, chemicals, and abrasions. This makes it a trusted solution for applications requiring reliable airflow, insulation, and resistance to harsh conditions.

Perfect for use in industries such as automotive, aerospace, and manufacturing, our Silicone / Glass Fibre Ducting collection ensures long-lasting performance and safety, even in the most challenging environments.

What is silicone air ducting used for?
It is a high-temperature flexible duct for moving air where an ordinary hose would fail - hot air feeds and returns, brake and diff cooling ducts, engine bay ventilation, motorsport cockpit cooling, marine engine room ventilation and industrial hot air handling. The two layers of silicone-coated glass fibre with a steel wire helix give it heat resistance far beyond a plastic or rubber duct.

What temperature will it take?
The operating range is -70C to +310C, which is the reason most people choose it over cheaper ducting. That covers hot air off a radiator or intercooler, brake cooling ducts running close to hot discs, and industrial process air. For comparison, PVC ducting tops out around +65C - if your application is anywhere near hot components, this is the material you need.

What sizes and lengths do you supply?
Internal diameters from 25mm up to 200mm, in 1, 2, 3 and 4 metre lengths. Order by internal diameter to match the spigot or duct outlet it will slide over. Because the wall is flexible, the duct will stretch slightly onto a spigot that is a close fit, which makes for a neat joint.

What is the steel helix for?
The wire helix moulded into the wall stops the duct collapsing under suction and stops it crushing flat if something rests against it. That means it works on both the pressure and the suction side of a fan or blower, and it will hold its bore in a tight installation. Without a helix, any flexible duct will pull shut the moment you apply negative pressure.

Is the double layer construction worth it over single ply?
Yes, for anything demanding. The double layer gives more mechanical strength, better insulation of the air inside the duct, and a longer service life under vibration and heat cycling. Single-ply duct is fine for gentle ventilation work; if the duct will be handled, routed tightly, or run continuously at high temperature, the double layer is the better buy.

What colours can I get?
Black, red, blue and grey. Black and grey are the usual choice for industrial and marine installations where the duct should not draw attention; red and blue are popular on motorsport and show builds where the ducting is visible. The colour is cosmetic only - the specification is identical across all four.

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