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http://bit.ly/2ASXGVkSilicone fiberglass high temperature fabric. Excellent for hot pipe insulating sleeves, welding blankets, and more. The fabric laser cuts mostly clean with slight edge melting and charring.
Will it work for your specific application? I don't know.
15oz / sq yard
0.020" thick
60" wide
500ºF / 260ºC working temperature
1000ºF / 540ºC peak temperature

