Nomex laminate consists of a polyester film with Aramid paper glued on both sides with high temperature adhesives. This is used to insulate class F electrical machines. Aramid paper has outstanding thermal characteristics and extra ordinary resistance against chemicals.

The better electrical and mechanical properties of polyester sheet are ideally complemented by high temperature resistance of the Aramid paper. Two sided covering of the Polyester film with Aramid paper, protects these laminates against influences of hydrolysis.