Chemetall Naftoseal® Fuselage and Fuel Tank Sealant, Polysulfide, Beige, 48 hr

Naftoseal® MC-780 class C is a two-component, manganese dioxide cured polysulfide polymer system with reduced density providing excellent fuel tank and fuselage seals. It is designed for interface surface sealing and wet riveting of fuselage components and 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 C 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 C can be mixed by MCI-Mixer or by appropriate two-component mixing and dosing systems. Naftoseal® MC-780 class C combines low viscosity, for ease of mixing, with a high thixotropy giving good application characteristics. It can be effectively applied by extrusion, by injection gun or by using a roller coating technique. The low viscosity means that it is easily squeezed from interfacing surfaces during the assembly process. It has a unique self-filleting characteristic.


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
• MDL 6058
• MEP 09-084
• NTA 65361

Specifications
• Series: MC-780 C-48
• Base Type: Polysulfide
• Color: Beige
• Curing Time: 56 days
• Specific Gravity: 1.35 g/cc
• Viscosity: 250 Pa-s
• Applicable Materials: Aluminum, Composite, Stainless Steel, Steel, Titanium
• Temperature Rating: -55 to 130 deg C Service
• Shelf Life: 6 months
• Application Time: 48 hr
• Tack-Free Time: 168 hr

Application
• For sealing fuselages and fuel tanks