Glastherm® HT 300 is designed for very high continuous operation temperatures over a long period. Its outstanding features include a long service life, very low weight loss and high dimensional stability. Glastherm® HT 300 also boasts excellent strength properties in high temperatures. The material structure is maintained over a very long period. Glastherm® HT 300 is free of asbestos and can be easily cut and adapted with standard metal tools.