Double Wall Black Steel Chimney Sleeve, 0.8 mm Thick

Description and Design Features

A double wall sleeve made of 0.8 mm thick DC01 black steel is a high-safety element for connecting heating appliances to stationary chimney shafts (brick or ceramic).

The key difference of this model from standard single wall inserts is the presence of a double wall with an air gap. Such a structure works on the thermos principle: the air buffer reduces heat transfer from the inner pipe to the outer shell. This decreases the thermal load on building structures and prevents overheating of the wall material at the penetration point.

Technical Advantages

• Thermal insulation: The air gap between the sleeve walls effectively dampens the temperature, protecting brickwork or ceramics from thermal shock and subsequent cracking.
• Fire safety: The temperature reduction on the outer contour of the sleeve makes the penetration point safer, especially in houses with wooden ceilings or finishes.
• Durability: The application of DC01 steel and heat-resistant Senotherm paint (matte black) ensures protection from corrosion and preservation of the appearance during operation.

Specifications and Dimensions

Mounting and Recommendations

The sleeve is mounted into the chimney wall using heat-resistant mounting mixtures. It is important to ensure the gas tightness of the sealing along the outer perimeter.

Important Limitations

• Application: Designed for wood stoves, fireplaces, and solid fuel boilers.
• Mounting: Requires qualified installation using specialized stove sealants or mortars.