★ Materials: Ceramic fiber products refer to industrial products made from ceramic fibers, which are lightweight, high-temperature resistant, good thermal stability, low thermal conductivity, low specific heat, and resistant to mechanical vibration. For high-pressure, wear-resistant environments. ★ We have multiple sizes for you to choose from, which can be used for various types of furnaces: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 30mm, 25mm, 40mm, 50mm. ★ Features: high temperature resistance, low thermal conductivity, heat shock resistance, low thermal capacity; Durable and sturdy, but flexible enough, easy to install, and easy to seal the door. ★ Level: Heat resistant Short term temperature: 1260 degrees Celsius=2300 degrees Fahrenheit; Long term heat resistance temperature: 1000 degrees Celsius=1832 degrees Fahrenheit.. ★ Application: As a sealing material for commercial and industrial oil, natural gas, and wood fired boilers, furnaces, furnaces, evaporators, and forgings. For sealing doors and entrances