Chemetall Naftoseal® MC 630 A-2, Fuselage Sealant, Polysulfide, Beige

Naftoseal® MC-630 class A is a two-component, manganese dioxide cured polysulfide polymer system providing excellent 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-630 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-630 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 and 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
• DAN 1159

Specifications
• Series: MC-630 A-2
• Base Type: Polysulfide
• Color: Beige
• Dry Time: 48 hr
• Recoating Time: 2 hr
• Specific Gravity: 1.65 g/cc
• Viscosity: 100 Pa-s
• Application Method: Extrusion, Injection Gun, Spatula and Brush
• Applicable Materials: Aluminum, Composite, Stainless Steel, Steel, Titanium
• Shelf Life: 6 months
• Storage Temperature: 26 deg C
• Temperature Rating: -55 to 130 deg C
• Tack-Free Time: 16 hr
• Tensile Strength: 2.2 N/sq-mm
• Elongation: 270 %

Applications
• For sealing fuselages