Heat-resistant Grommet for twin-wall chimney flues


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Get the perfect solution, to seal a twin-wall chimney flue permanently air tight.


The direct application of standard air tight products to the flue is not recommended, because almost every membrane and tape has a maximum temperature resistance of +80°C. Unfortunately the temperatures on the surface of the flue could reach much higher temperatures easily.


The Heat-resistant grommet is resistant to temperatures up to +250°Celsius, by using a special collar/ sleeve material. The self-adhesive Tyvek flange is perfect for bonding to all kind of airtight & vapour control membranes. For applications to concrete we highly recommend to use the self-adhesive Butyl version.


The Heat-resistant grommet, which is designed and manufactured in Germany, is approved by independet German testing agencies GTÜ and TÜV.


Available in various widths for all types of twin-wall chimney flues.

For all heat resistant grommets, we do not stock permanently please expect a delivery time of approx. 7-10 working days.



Heat-resistant grommet


  • 0.5 kg
  • Sold Out