3M™ Hot Melt Adhesive 3779

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Provides extreme temperature stability 300ºF / 149ºC for a durable bond

Fuel, oil and impact resistant

Multi-purpose adhesive works on a variety of substrates, including most plastics

Frequently viewed resources

Safety Data Sheet (PDF)

Container Size (Imperial)

Container Size (Metric)

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Highlights

Provides extreme temperature stability 300ºF / 149ºC for a durable bond
Fuel, oil and impact resistant
Multi-purpose adhesive works on a variety of substrates, including most plastics
Fast setting allows for quick assembly
Excellent adhesive for electronics and potting applications

3M™ Hot Melt Adhesive 3779 is an amber-colored, high performance, thermoplastic adhesive formulated for strong resistance to heat, impact, fuel and oil. This multi-purpose hot melt adhesive is an effective solution for many applications, including electronics and potting.

Adhesive offers high strength and high heat resistance

Provides Extreme Temperature Stability 300°F / 149°C for a Durable Bond
3M™ Hot Melt Adhesive 3779 offers strong resistance to heat, impact, fuel and oil. It is manufactured using 100% solids, thermoplastic resin for use with a 3M™ Hot Melt Applicator. This adhesive offers extreme temperature stability (300°F / 149°C) and is excellent for electronics and potting. This product supports high-tempo productivity with a 25-second open time that is sufficient for fit positioning and adjusting. In addition, 3M™ Hot Melt Adhesive 3779 (PDF, 334.66 Kb) has a low odor to help maintain a comfortable work environment. This product will bond wood, polypropylene, electronics, vinyl and lightweight substrates on furniture, automotive interiors, outdoor applications, small appliances and general product assembly.

Recommended Applications

Headliner fixturing and attachment
Wire harness attachments
Electronics potting
Metal and plastic bonding in appliances
Attaching trim

Understanding Hot Melt Adhesives
Hot melt adhesives (PDF, 1.68 Mb), also known as glue sticks, are liquefied thermoplastic adhesives available in both low and high-temperature versions. Low temperature hot melt adhesives are applied at 250°F / 121°C temperatures, which makes them ideal for bonding electronics, plastics, cloth and other heat sensitive materials. High temperature hot melt adhesives are applied at 380°F / 193°C and produce a stronger bond than the low temperature hot melts.

Melted adhesive is extruded through a nozzle using a 3M Hot Melt Applicator by either pneumatic pressure, a mechanical trigger mechanism, or with pressure applied directly on the stick. Different nozzles can be used to apply thin, wide strips or narrow, thicker beads. Hot melt adhesive generally sets quickly, ranging from a few seconds to a few minutes, depending on the adhesive formulation.

Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Typical properties

Details

Adhesive Type	Polyamide
Application	Mounting & Trim Attachment, Small Joint Assembly, Sealing, Potting and Encapsulating
Application Method	Handheld Process, Spray
Brands	3M™
Case Quantity	11.0 Bags per Case
Container Size (Imperial)	11 lb, 22 lb
Container Size (Metric)	5 kg, 10 kg
Heat Resistance	300 Degree Fahrenheit
Heat Resistance (Celsius)	149 °C
Industries	Consumer Goods, Electronics, General Industrial, Furniture, Military & Government, Packaging, Retail, Signage, Transportation, Specialty Vehicle, Woodworking, Automotive, Construction
Maximum Operating Temperature (Fahrenheit)	300 ℉
Open Time	35 Second
Product Color	Amber
Product Form	Pound
Shear Strength	700 psi
Smallest Saleable Unit	Case
Solids Weight Percent (Approximate)	100 %
Surface Type	Plastic, Wood
Temperature Setting for EC Heat Gun	5

Dimensions and Classifications

Overall Length (Imperial)	2 in, 3 in, 8 in
Overall Length (Metric)	0.05 m, 0.07 m, 0.2 m
Overall Width (Imperial)	0.62 in, 1 in
Overall Width (Metric)	15.9 mm, 25.4 mm

Resources

3M™ Hot Melt Adhesive 3779-AE, 3779-PG, 3779-TC, 3779-Q, 3779-B

Safety Data Sheets

Document Number: MSDS_1003847_US_EN

(PDF)

Reviews

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For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.