Cemedine 521
Cemedine 521 is a one-component, solvent-based rubber adhesive (industrial grade) made by Cemedine (Japan). It is known for strong initial tack, flexibility after curing, and good adhesion to dissimilar materials.
Key Features
Type: Solvent-based rubber adhesive
Form: One-component (ready to use)
Color: Typically light yellow / amber
Bonding style: Contact bonding (apply to both sides)
Initial tack: Strong
Flexibility: Good (absorbs vibration and impact)
Water resistance: Good after curing
Typical Applications
Used widely in industrial assembly and general bonding where flexibility is required:
Suitable Materials
- Rubber
- Metal
- Wood
- Leather
- PVC and some plastics
- Fabric, felt
Typical Uses
- Rubber-to-metal bonding
- Automotive interior parts
- Footwear and leather goods
- General industrial assembly
- Household and workshop repairs
Application Method (Typical)
Clean and dry bonding surfaces (remove oil, dust).
Apply adhesive evenly to both surfaces.
Allow solvent to flash off (until surface is tacky).
Press parts together firmly.
Full strength develops after complete solvent evaporation (usually within 24 hours).
Safety & Handling (Summary)
Flammable – contains organic solvents
Use in well-ventilated areas
Avoid inhalation of vapors
Wear protective gloves and eye protection
Keep away from heat, sparks, and open flames
