Product Introduction
3M™ Scotch-Weld™ Epoxy Adhesive EC-3333 B/A is a robust, two-part epoxy that cures at room temperature to deliver superior shear and peel strength for demanding aerospace applications. It is engineered to maintain its bond strength in both low and elevated temperatures and withstand harsh environments, including hot-wet conditions. As a high-performance alternative to mechanical fasteners, screws, and rivets, it bonds effectively to various substrates like metals and many plastics. The adhesive features a user-friendly 2:1 mix ratio and a 20-minute work life, providing sufficient time for positioning. It is available in bulk or duo-pak cartridges compatible with the 3M™ EPX™ Applicator System for precise application and minimal waste.
3M™ EC-3333 B/A Features
- Simple Mix Ratio: Features a 2:1 mix ratio for simplified mixing.
- 20-Minute Work Life: Allows ample time for positioning and adjustments before setting.
- Convenient Packaging: Available in bulk containers or duo-pak cartridges.
- Flexible Bond: Designed to withstand vibration without compromising integrity.
- Hot-Wet Resistance: Maintains bond strength in humid and high-temperature conditions.
- Outstanding Environmental Performance: Delivers reliable bonding in harsh environments.
- High Strength: Offers high peel and shear strength for critical bonding applications.
- Controlled Flow: Ensures precise and clean application.
3M™ EC-3333 B/A Applications
- Replacing mechanical fasteners, screws, rivets, and spot welds.
- Bonding metals and a variety of plastics in aerospace manufacturing.
- Use in applications that require high peel and shear strength under harsh conditions.
- Structural bonding tasks that demand hot-wet resistance and environmental durability.
- Precision bonding processes where controlled flow and easy handling are required.
- Assembly tasks using duo-pak cartridges with the 3M™ EPX™ Applicator System.
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
Need help selecting the right product or solution?
| Property | Value |
|---|---|
| Adhesive Type | Epoxy |
| Container Size (Imperial) | 1 qt, 1.69 fl oz |
| Container Size (Metric) | 0.95 L, 50 mL |
| Cure Rate | 24 hr |
| Cure Temperature | Room Temperature |
| Density | 1.12 g/cc |
| Time to Handling Strength | 2 hr - 3 hr |
| Work Life | 20 min |



