Permabond ET503 5 minute fast-setting cold-temperature curing water and humidity resistant epoxy adhesive

Product Name

Permabond ET503

Brief Description

Permabond ET503 is a two-part, fast-setting epoxy adhesive engineered for high strength and toughness, offering rapid strength development and excellent environmental durability. It is specifically formulated to cure effectively at cold temperatures and provides outstanding resistance to water and humidity, making it ideal for demanding industrial and outdoor bonding applications.

Popular Applications & Uses

- Fast assembly of components.- Bonding in outdoor environments and harsh weather conditions.- Sealing and bonding tasks in cold temperatures (down to 5°C for curing).- Structural bonding of various materials.- Repair and maintenance where quick, strong bonds are needed.- Bonding polycarbonate panels and metal assemblies.- Pool and spa repair, including underwater bonding.- Marine and woodworking applications.- Countertop reinforcement.

Industries that Commonly Use It

- Aerospace/Defense- Automotive Service/Repair- Cabinet & Woodworking- Construction/ Building Services- Fabrication- General Manufacturing- Government & Military- Industrial Supply- Marine- Metal Fabrication- Plastic Fabrication- Transportation/ Specialty Vehicle

Special and Unique Features

- 5-minute fast setting, with working strength achieved in 20 minutes.- Cures effectively at cold temperatures (as low as 5°C / 40°F).- Outstanding resistance to water, moisture, and humidity.- Can bond underwater.- Excellent environmental durability, suitable for outdoor applications.- High strength and toughness, without compromising bond quality despite fast cure.- Sandable and paintable once cured.- Solvent-free.- Cures tack-free.- 1:1 mix ratio, easy to dispense.

Key Properties

- Adhesive Type: Two-part epoxy adhesive.- Mix Ratio (by volume): 1:1.- Usable / Pot Life @23°C: 5 minutes.- Fixture Time @23°C: 6 minutes.- Working Strength @23°C: 20 minutes.- Full Cure @23°C: 24 hours.- Cure Temperature Range: Achieves high strength even when cured at 5°C (40°F).- Operating Temperature Range (cured adhesive): Minimum -40°C (-40°F).- Color (cured): Pale, dove grey.- Viscosity (mixed @25°C): 15,000 cP (mPas).- Maximum Gap Fill: 1mm (0.04").- Shear Strength (Mild Steel): 20-26 N/mm² (2900 - 3770 psi).- Peel Strength (Aluminum): 140-180 N/25mm (32-41 PIW).- Hardness (ISO868): 50 Shore D.- Water Absorption (7 days at 25°C): 0.8%.

Surface Compatibility

- Metals (e.g., Mild Steel, Aluminum, Stainless Steel).- Wood.- Ceramics.- Various Plastics (e.g., ABS, PVC, Polycarbonate).- Composites (e.g., CFRP, GRP).- Concrete.- Tarmac.- Glass.

Known backups / known substitutes

- Other Permabond epoxies or structural adhesives, such as Permabond MT modified epoxies or MS polymers for more flexibility.- Methylmethacrylate (MMA) adhesives for faster cure and high bond strength with rubber toughening.- Loctite adhesives (e.g., Loctite 3801, FE Rapid, C792, C791, C2048, 105 C6, 2011) can be considered as alternatives, though formulations differ.- Other cold cure epoxies from manufacturers like System Three Resins or Epoxy.com.- Custom-formulated adhesives from Permabond.

Comparison Note

Permabond ET503 stands out among rapid-set epoxies by achieving high strength and toughness without compromising bond quality, a common issue with many fast-curing adhesives. Its ability to cure effectively at low temperatures and provide exceptional resistance to water and humidity makes it particularly advantageous for outdoor and challenging environmental applications where standard epoxies might struggle.