Loctite SF 7649 is a solvent-based surface primer designed to accelerate the cure of Loctite anaerobic glues on stainless steel, aluminium, zinc and low-alloy metals. It evaporates quickly with no residue, boosts bonding strength and allows full curing at room temperature even on passive substrates. Ideal for industrial assembly where fast fixture and reliable bonding are required.

• Type: Anaerobic adhesive primer activator

• Appearance: Clear volatile liquid

• Feature: Fast evaporation, no residue

• Function: Accelerate cure for inactive metal surface

• Key Property: Improve curing speed and bonding strength

• Package: 4.5oz

• Anaerobic Cure Accelerator – Greatly shortens curing time for Loctite threadlocker and retaining compounds.

• Multi-Metal Compatibility – Works on stainless steel, aluminium, galvanized metal and inactive alloys.

• Fast Evaporating Formula – Solvent evaporates rapidly, no sticky residue after application.

• No Surface Corrosion – Mild formula, safe for metal plating and precision finished parts.

• Consistent Bond Strength – Stabilizes adhesion performance across batch production and assembly lines.

• Threadlocker Pre-Treatment – Prime bolts, nuts and studs for stronger thread locking and anti-loosening.

• Retaining Compound Activation – Prepares shafts, bearings and sleeves for interference fit bonding.

• Stainless Steel Assembly – Enables reliable anaerobic curing on stainless steel fasteners and fittings.

• Aluminium Alloy Bonding – Activates surface for aluminium parts assembly in machinery and automotive.

• Mass Production Line Use – Ideal for factory automated dispensing and fast assembly processes.