3M™ Class B Aerospace Sealant, Manganese Dioxide/Polysulfide, Paste, White, Sulfuric, 1 pt

3M™ aerospace sealant AC-770 is a family of Class B, manganese dioxide cured polysulfide sealants formulated for easy tooling. Their fast cure time and low density contribute to faster process times and lighter aircraft. These two component sealants have outstanding resistance to jet fuel, chemicals and petroleum products common throughout the aerospace industry.
Features
• Low density formula weighs 3 to 4 pounds per gallon than traditional sealants
• Quick cure allows increased throughput
• Helps reduce shrinkage and rework for total cost reduction
• Seals joints and gaps in fuselage applications
• Maintains flexibility and bond strength under extremes of temperature, weathering and stress
• Easier application requires less mixing time and less tooling to apply
Technical Information
• BMS-5-142 Tested
Specifications
• Series: AC-770 B-2
• Container Size: 1 pt
• Base Type: Manganese Dioxide/Polysulfide
• Form: Paste
• Color: White
• Odor/Scent: Sulfuric
• Composition: 70 to 80% Polysulfide Rubber, 15 to 25% Calcium Carbonate, <2% 3-(Trimethoxysilyl)Propyl Glycidyl Ether, <2% Amorphous Silica, <2% Phenol-Formaldehyde Resin, <1% Epoxy Resin, <1% Phenol-Formaldehyde Polymer
• Dry Time: 9 to 11 hr
• Density: 1.06 g/mL
• Specific Gravity: 1.1
• Viscosity: 9500 to 13000 poise
• VOC Content: 6 g/L
• Application Method: Caulking Gun, Spatula
• Applicable Materials: Aluminum, Stainless Steel, Steel, Titanium
• Shelf Life: 9 months
• Storage Temperature: <80 deg F
• Flash Point: >=200 deg F
• Application Time: 2 hr
• Temperature Rating: -65 to 250 deg F