3M™ AC-770B1 Aerospace Sealant, 25 g

3M™ AC770B1 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 dark brown in color, while the thixotropic paste part-B base is off-white in color. This slight odored part-A catalyst has a specific gravity of 1.58 and VOC contents of 0.9 grams per liter. This sulfurous odored part-B base has a specific gravity of 1.1 and VOC contents of 3.4 grams per liter. The sealant is supplied in a 25-gram container and can be mixed in a 100 base/10 catalyst ratio by weight to form a mixed compound. It requires 1 hour for application and will be sufficiently cured after 5 to 6 hour. The product withstands a temperature range of -65 to 250 degrees F.

Features:

• Efficiently maintains flexibility and bond strength on various metal and coated substrates
• Easy to apply using spatula, extrusion gun or injection dispenser
• Uses low-density formula that weighs 3 to 4 pounds less per gallon than traditional sealants
• Provides low shrinkage results in less rework
• Quick cure rate helps to achieve increased throughput
• Density of 1.58 grams per milliliter for part-A catalyst and 1.1 grams per milliliter for part-B base
• Viscosity of 9500 to 13,000 poise at 77 degrees F for part-B base
• Flash point greater than or equal to 200 degrees F

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 and stainless steel

Applications:

• Sealing fuselages
• Filling voids

Specifications:

Boeing BMS 5-142