Specialty Adhesives – Bonding

✅ Specialty Adhesives – Bonding (Quick Guide)

Specialty bonding adhesives are high-performance glues used when normal adhesive is not strong enough. They are used for metal, plastic, rubber, glass, composite, marine, and industrial bonding.

⭐ Main Types of Specialty Bonding Adhesives
1) Epoxy Adhesive (2-Part)

✅ Best for: metal to metal, metal to fiberglass, heavy duty bonding

• Very strong bond
• Fills gaps well
• Water / chemical resistant
• 📌 Use in: marine repair, structural bonding, fabrication

2) Polyurethane Adhesive / Sealant

✅ Best for: marine & outdoor bonding

• Flexible after curing
• Waterproof / weather resistant
• Example: Marine sealants like 5200 type

3) Cyanoacrylate (Instant Adhesive / Super Glue)

✅ Best for: quick fixing small parts

• Fast bonding (seconds)
• Not good for large gaps
• Use in: plastic, rubber, small metal parts

4) Acrylic Structural Adhesive

✅ Best for: high strength + fast cure

• Strong on metals and composites
• Good impact resistance
• 📌 Used in: automotive, industrial assembly

5) Anaerobic Adhesives (Threadlocker / Retainer)

• ✅ Best for: nuts, bolts, bearings
• Cures without air (inside metal threads)
• 📌 Example: threadlock for marine vibration areas

6) Hot Melt Adhesive

• ✅ Best for: packaging, temporary bonding
• Fast and clean
• Not for heavy load