3M™ AC-350B4 Aerospace Sealant 70005202729 Dark Gray, 3.5 oz

3M™ AC350B4 class B non-sag aerospace sealant comes in two parts which includes part-A catalyst and part-B base. The liquid part-A catalyst is brown in color, while the paste part-B base is off-white in color. With greater than or equal to 200 degrees F flash point, the slight odored part-A catalyst has a specific gravity greater than or equal to 1.58 and VOC contents of 0.9 grams per liter. With greater than 230 degrees F flash point, the sulfurous odored part-B base has a specific gravity of 1.35 and VOC contents of 2.9 grams per liter. This sealant is supplied in a 3.5-ounce container and can be mixed in a 100 base/10 catalyst ratio by weight to form a dark gray color mixture. It requires 4 hours for application and will be sufficiently cured after 32 to 36 hour. The product withstands a temperature range of -65 to 250 degrees F.

Features:

• Fast cure rate helps to meet various process demands
• Efficiently maintains flexibility and bond strength on various metal, composite and coated substrates
• Easy to apply using spatula, extrusion gun or injection dispenser
• Provides low shrinkage results in less rework
• Density of 1.58 grams per milliliter for part-A catalyst and 1.35 grams per milliliter for part-B base
• Viscosity of 9000 to 12,000 poise at 77 degrees F for part-B base
• Withstands a tensile strength of 250 psi

Benefits:

• Sealant offers an excellent resistance to aviation gasoline/jet fuel and chemical/petroleum products commonly used in aircraft industry
• Suitable for use on most metal substrates including aluminum, titanium, steel, stainless steel and glass

Applications:

• Sealing integral fuel tanks
• Repairing integral fuel tanks
• Sealing fuselages

Specifications:

• AMS-S-8802 and AMS 3276
• CMNP093 Type XIV or MMS332 Grade 2