Kevlar Fire String
Fire string is made of kevlar and is commonly used for fire diabolo. This braided string can also be used for sewing seems or finishing wicking ends on various fire props. If you are going to use it for sewing wick on to fire tools, the twisted cord is another option that is less expensive per foot.
For more information about Kevlar Fire Wick click on the link below.
diameter 3/64 inch (1.1mm)