NAFTOSEAL® MC-780 Class B retains its flexibility and bonding strength on most metal surfaces such as aluminum, stainless steel, steel, titanium, composite, and many coatings under extreme temperature, weather and stress.

The mixed compound is a thixotropic paste that is easily applied by extrusion, injection gun or spatula. It has excellent tooling properties.

It has exceptional resistance to aviation gasoline and jet fuel, as well as resistant to chemicals and petroleum products used in the aircraft industry. In addition, it was developed for a service temperature of -55 ° C (-67 ° F) to +130 ° C (+ 266 ° F) and withstands a short-term temperature of +182 ° C (+360 ° F).