3M Scotch-Weld CA4 Clear Instant Adhesive Low Viscosity Cyanoacrylate Glue for Plastic Rubber Metal

3M Scotch-Weld CA4 – Clear Low Viscosity Cyanoacrylate Instant Adhesive

Speed meets precision with the 3M Scotch-Weld CA4 Instant Adhesive. This low viscosity cyanoacrylate (CA) formula wicks effortlessly into tight joints and porous surfaces, creating a crystal-clear, high-strength bond in seconds — no clamping required. Whether you're bonding plastics in electronics assembly, rubber components in automotive applications, or metal parts in precision manufacturing, CA4 delivers the fast, reliable performance that professionals demand.

Key Features

• Low viscosity – excellent capillary action for tight-fitting joints and porous substrates
• Instant cure – bonds in seconds at room temperature with moisture activation
• Crystal clear finish – invisible bonds on transparent and light-colored materials
• High bond strength to plastics, rubber, metals, and ceramics
• No mixing required – single-component, ready to use
• Minimal surface preparation needed for most substrates

Typical Applications

• Plastic component bonding and assembly
• Rubber bonding and sealing
• Metal-to-metal and metal-to-plastic bonding
• Electronics and PCB component fixing
• Medical device assembly
• General industrial instant bonding

Specifications

• Brand: 3M
• Series: Scotch-Weld
• Model: CA4
• Color: Clear
• Chemistry: Cyanoacrylate (CA)
• Viscosity: Low
• Cure Type: Moisture cure (instant)