Chemetall Naftoseal® MC 780 A-1/2,Fuselage and Fuel Tank Sealant, Polysulfide, Gray, 8 Hr

Naftoseal® MC-780 class A is a two-component, manganese dioxide cured polysulfide polymer system with low density providing excellent fuel tank and fuselage seals. It has outstanding resistance to aviation gasoline and jet fuel, as well as resistance to the chemicals and petroleum products used in the aircraft industry. Naftoseal® MC-780 class A maintains its flexibility and bond strength on most metal substrates like aluminum, stainless steel, steel, titanium, composite and many coatings under extremes of temperature, weathering and stress. Naftoseal® MC-780 class A techkits can be mixed by MCI-Mixer or by appropriate two-component mixing and dosing systems. The mixed compound is a pourable, slightly thixotropic paste easily applied by extrusion, injection gun, spatula or brush. It has excellent tooling properties.

Features
• Free of chrome and solvents/low in solvent content
• Low temperature flexibility
• Fast tack-free and cure times
• Good adhesion to various substrates
• Excellent chemical resistance
• High elasticity and resilience
• Good thixotropic properties, no slump

Technical Information
• AIMS 04-05-001, 04-05-012, 04-05-014 and 04-05-015
• CMS-SL 101 and 104
• ECS 0045
• MDL 6058
• NTA 65361

Specifications
• Series: MC-780 A-1/2
• Base Type: Polysulfide
• Color: Gray
• Curing Time: 8 hr
• Specific Gravity: 1.25 g/cc
• Viscosity: 50 to 200 Pa-s
• Tensile Strength: 1.5 N/sq-mm
• Applicable Materials: Aluminum, Composite, Stainless Steel, Steel, Titanium
• Temperature Rating: -55 to 130 deg C Service
• Elongation: 200 %
• Non-Volatile Content: 92 %
• Shelf Life: 6 months
• Application Time: 30 min
• Tack-Free Time: 4 hr

Applications
• For sealing fuselages and fuel tanks