Material: fiberglass, silicon resin Working temperature: 500 degree celsuis, and 1100 degree for 15~30 seconds ID Size: 10~100mm Certificate: Rohs, Reach, CQC, UL#: E333178, E333177 Application: Impede heat radiation of flame sheds; Protect against abrasion, solvents and corrosive chemicals; Impede heat lost and favor to saving energy.