Product Name
Devcon Epoxy Plus 25 (14278 50ml & 14350 400ml) Gray Toughened Impact/Shear/Peel Resistent Epoxy Adhesive
Brief Description
Devcon Epoxy Plus 25 is a high-performance, two-part, rubber-toughened structural epoxy adhesive. It is specifically engineered to provide superior peel, impact, and fatigue resistance, making it ideal for demanding applications where strong, durable, and flexible bonds are required. This gray-colored adhesive is suitable for both bonding a wide range of substrates and for potting and encapsulating components.
Popular Applications & Uses
- Structural bonding of various industrial, automotive, and electronic components.
- Repairing and encapsulating parts requiring high strength and resistance to dynamic stresses.
- Potting and encapsulating electronic components due to its high dielectric strength.
- General-purpose bonding in manufacturing and maintenance applications.
Industries that Commonly Use It
- Aerospace/Defense
- Automotive Service/Repair
- Construction/Building Services
- Electrical Services or Products
- Energy
- Engineering Services
- Fabrication
- General Manufacturing
- Government & Military
- Industrial Supply
- Marine
- Metal Fabrication
- Plastic Fabrication
- Prosumer
- Transportation/Specialty Vehicle
Special and Unique Features
- Rubber-Toughened Formula: Provides superior peel, impact, and fatigue resistance, making bonds more resilient to dynamic loads and vibrations.
- Non-Corrosive: Safe for use with various materials without causing degradation.
- High Dielectric Strength: Excellent for electrical potting and encapsulating applications.
- Non-Shrinking: Ensures consistent bond lines and reduces stress on bonded components.
- Chemical Resistance: Resists glycols, oils, mineral spirits, and a variety of other chemicals, enhancing durability in harsh environments.
Key Properties
- Color: Gray (Mixed from Grey resin and White hardener)
- Mix Ratio (by volume): 1:1
- Working Time (Open Time): 25 minutes (at 72°F / 22°C)
- Fixture Time: 3.5 hours (at 72°F / 22°C)
- Functional Cure: 24 hours (at 72°F / 22°C)
- Full Cure: 30 hours (at 72°F / 22°C)
- Service Temperature: -40°F to +200°F (-40°C to +93°C)
- Shear Strength (Tensile Lap Shear): 2,750 psi (at 0.010" bondline)
- Peel Strength (T-Peel): 20-25 pli (pounds per linear inch)
- Hardness: 74 Shore D
- Gap Fill: 0.01″ – 0.05″
- Mixed Viscosity: 70,000 cps
- Dielectric Strength: 550 volts/mil
- Elongation at Break: 20%
Surface Compatibility
Devcon Epoxy Plus 25 is designed to bond a wide variety of substrates, including:
- Metals (e.g., steel, aluminum)
- FRP Composites
- Rigid Plastics (Note: Not recommended for polyurea, PPO, RIM, & Celluloses)
- Concrete
- Glass
- Wood
Known backups / known substitutes
Other Devcon epoxy adhesives with varying properties and cure times can serve as alternatives, such as Devcon 2 Ton Epoxy (for tough and durable applications), Devcon 5 Minute Epoxy Gel (for fast fixturing), and Devcon 1 Minute Epoxy Gel (for ultra-fast curing). Competitor products offering similar structural bonding capabilities include J-B Weld (e.g., KwikWeld, SteelStik), 3M Scotch-Weld Epoxy Adhesive DP420, Loctite Epoxy, and Gorilla Glue Epoxy. Other manufacturers like Hardman and Resinlab also provide comparable structural epoxy adhesives.
Comparison Note
Devcon Epoxy Plus 25 distinguishes itself through its unique rubber-toughened formulation, which provides an exceptional balance of high shear strength with superior peel, impact, and fatigue resistance. This makes it particularly well-suited for applications subjected to dynamic stresses, vibrations, and impacts, where more brittle standard epoxies might fail. Its 25-minute working time offers a practical window for assembly and positioning in industrial and repair scenarios, balancing efficient workflow with sufficient handling time.
