How do you know the sheet gasket is asbestos or non asbestos if not have imprinting?

Answer:
The only way to tell whether a gasket has asbestos or not is to have it sampled by a qualified person and analysed in a qualified laboratory.
First answer by Pzavon. Last edit by Pzavon. Contributor trust: 759 [recommend contributor recommended]. Question popularity: 1 [recommend question].