Made In The USA!!! 1/2" Inch x 10' Our ropes are constructed of high quality type E glass that will not burn and will withstand continuous exposure to temperatures of 1000°F (540°C). This material resists most acids and alkalis; is unaffected by most bleaches and solvents; and is highly flexible and conformable. Applications include boiler, coke oven, industrial oven, and wood stove doors; crucible packing and pollution control equipment; high temperature tying and lacing cords; and tadpole tape/gasket core ropes. (38 3 8)