At present, the commonly used high temperature fire sleeve is mainly made of alkali-free glass fiber woven glass fiber and coated with high-quality silicone rubber, which can prevent the splashing of molten iron, copper and aluminum, and is not damaged by high temperature and flame, so as to ensure the overall strength of the sleeve during installation and the stability coefficient under high temperature environment.
When selecting high temperature fire sleeve, it is better to select a section of sample first and cut it to check the color of glass fiber inside. Conventional glass fiber is white, and some are milky white and light yellow. This is due to the influence of temperature in the process of high temperature vulcanization, which does not affect the use. In order to save cost, some manufacturers will usd Mid-alkali glass fiber instead or add other substances into the glass fiber. Such products will greatly affect the flame retardant, heat insulation effect and service life of the casing.
The qualified high temperature fire sleeve has the characteristics of dust-proof, waterproof and easy management because of the high-quality silicone rubber used on its surface. Its normal working temperature is 560 ℃, which is suitable for most working conditions. It can withstand 5-10 minutes at 1090 ℃ to adapt to short-term high-temperature environment, while it can withstand 20-90 seconds at 1650 ℃ to prolong the discovery and emergency situation Process.
It’s better to choose high-quality suppliers with quality assurance when purchasing high-temperature fire sleeve, such as Beijing Great Pack Materials, which is more reliable in terms of performance, stable product quality, excellent service, strong brand influence and good reputation.
