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

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).

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