3M™ Fuel Resistant Coating EC-776 is a two-component, silicone-modified epoxy coating specifically formulated for aerospace applications where prolonged exposure to jet fuels, hydraulic fluids, and aviation lubricants is expected. This coating cures to form a continuous, flexible film that:
Fuel Resistance: Exhibits excellent chemical resistance to Jet A, JP-4, JP-5 and military aviation fuels, maintaining integrity and adhesion after repeated immersion.
Thermal Performance: Withstands continuous service temperatures from -65 °C to 150 °C (-85 °F to 300 °F) and intermittent excursions up to 200 °C (392 °F).
Mechanical Durability: Provides strong abrasion and impact resistance, reducing wear on leading edges, fuel tanks, and external hardware.
Corrosion Protection: Acts as a barrier coating to prevent moisture and salt-induced corrosion on aluminum alloys, stainless steel, and composite surfaces.
Regulatory Compliance: Formulated to meet California VOC regulations; sold as “California: Aerospace Use Only” (not for general industrial sale outside aerospace).
Application: Supplied as a two-quart kit (resin and activator), packaged in 1-quart metal cans. Mix ratio is 4 parts resin to 1 part activator by volume, with a pot life of approximately 4 hours at 23 °C (73 °F). Apply by spray or brush to achieve a dry film thickness of 1.0–1.5 mil per coat; 2–3 coats recommended.
Shelf Life & Storage: Unopened cans have a shelf life of 24 months when stored at 5–30 °C (41–86 °F) in a dry environment.
Safety & Handling: Refer to SDS for detailed personal protective equipment (PPE) requirements, ventilation guidelines, and disposal procedures.
This premium coating is ideal for protecting aircraft fuel tanks, fuel lines, pylons, and ground support equipment where resistance to hydrocarbon fluids and harsh operating environments is critical. If you’d like to include cost information, specific application guidelines, or an SDS link, just let me know!