3M™ Aerospace Sealant AC-770

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 AND BENEFITS

Low density formula weighs 3–4 lbs. less 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

Property Details

Technical information
Application
Sealing
Application Life

1 Hour, 2 Hour

Brands
3M™
Container Size (Imperial)
1 Pint, 1 Quart, 1 Ounce, 1 Ounce, 2.5 Gallon, 3.5 Ounce, 6 Ounce
Container Size (Metric)
3.785 g, 99.223 Liter
Cure Type
Fast Cure
Product Color
Brown

Applications

A Sealant Triple Play — Flexible, Strong, and Time Saving
3M™ Aerospace Sealant AC-770 Class B is a two-component thixotropic paste and is lighter than traditional sealants, weighing an average of 3—4 lbs. less per gallon. AC-770 maintains flexibility and bond strength on various substrates under extremes of temperature, weathering, and stress. It is easily applied by extrusion, injection gun or spatula, and exhibits superb tooling properties. Our Class B sealant has no added solvents, which minimizes shrinkage to help reduce rework and improve processes.

Smart Sealants, Robust Results
When you use 3M Sealants, you’re applying science, ingenuity, aerospace expertise and cost saving solutions. They have outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to the aircraft industry. 

Data Sheets

Too See 3M™ Aerospace Sealant AC-770 technical data sheet (TDS) and the 3M™ Aerospace Sealant AC-770 safety data sheet (SDS). Visit here 

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