Silicone tolerance is about 280 degrees. Suitable for chimney diameters: 4.5–10 cm (for chimneys over 4.5 cm, trimming the rubber ring may be required). Method of use: (1) Open the tent chimney hole: a. Determine the position of the chimney opening on the tent. b. Use the included circular steel plate to mark the screw hole positions and cut the opening accordingly. (2) Cut two wear-resistant material pieces (such as thick fabric) to match the shape of the steel plate, using the silicone sleeve’s steel ring as a template. Note: This step is optional, but adding wear-resistant layers helps protect the tent from abrasion. (3) Place the cut wear-resistant material and steel plate inside the tent opening. Insert screws from the inside through the marked holes. (4) On the outside, sequentially install the wear-resistant layer, silicone sleeve, and steel plate. Secure tightly using nuts and bolts. (5) Carefully cut the tent fabric inside the silicone ring to complete the opening. (6) Insert the chimney pipe through the opening and ensure a secure fit before use. Adjust the silicone ring as needed for chimneys over 4.5 cm in diameter. Safety protection: Prevents direct contact between the hot chimney pipe and the tent fabric, reducing the risk of heat damage or fire. Sturdy and durable: Made from high-quality, environmentally friendly silicone that is heat-resistant, wear-resistant, and resistant to deformation. The steel components are corrosion-resistant for long-lasting performance. Wind and waterproof: Offers excellent protection against weather, water, wind, and UV exposure, making it ideal for outdoor use in various conditions. Versatile use: This tent stove jack kit is suitable for use with bell tents, camping tents, yurts, cabins, shelters, boats, barges, summer houses, workshops, garages, and other structures requiring a flue passage.