3M Scotch-Weld Anaerobic Activator AC649

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Description for 3M Scotch-Weld Anaerobic Activator AC649

General-purpose surface activator/primer that cure anaerobic adhesives on inactive or very cold surfaces.

Application Type	Activator
1 Part or 2 Part	1-Part
Material Form	Liquid
Manufacturer	3M
Chemistry	Acetone
Cure Method	Anaerobic
Viscosity (cPs)	2.00
Color	Green

Best Practices for 3M Scotch-Weld Anaerobic Activator AC649

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Technical Data for 3M Scotch-Weld Anaerobic Activator AC649

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Overview

Application Type
- Accelerator / Activator - Activator
1 Part or 2 Part
- 1-Part
Material Form
- Liquid
Chemistry
- Solvent-Based - Acetone
Cure Method
- Anaerobic
Color
- Green

Specifications

Cure Specs

Viscosity (cPs)	2.00

Other Properties

Specific Gravity	0.790

Business Information

Shelf Life Details	Storage: Store product in cool, dry area out of direct sunlight.;Shelf life: Twelve months when stored at 60° to 80°F (16° to 27°C) in the original unopened container.
Shelf Life Temperature (°F)	60 to 80
Shelf Life (mon)	12

Best Practices for 3M Scotch-Weld Anaerobic Activator AC649

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1. Surface Preparation
  
  Ensure parts are clean, dry, and free from oil and grease.
  
  Apply to one or both bonding surfaces.
  
  When using solvents and/or aerosols, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
2. Application
  
  Adhesive is applied to one substrate and activator is sprayed or painted on to the other.
  
  Apply to one or both bonding surfaces.
  
  Allow parts to dry completely (usually 30-60 seconds). Activator-coated parts may be held up to their On-Part Life but surface contamination must be avoided
  
  Apply a Rite-Lok™ Anaerobic Adhesive to one or both parts making sure there is sufficient product coverage.
  
  Assemble immediately, moving surfaces back and forth to ensure full distribution of the adhesive.
  
  Secure the assembly until fixtured.
  
  An alternative method of use is in post assembly application. After apply anaerobic adhesive and assembling parts the anaerobic activator is applied topically over the joint area to aid cure.
3. Curing
  
  Curing commences when the two parts are assembled.
  
  Allow parts to dry completely (usually 30-60 seconds). Activator-coated parts may be held up to their On-Part Life but surface contamination must be avoided.
Comparable Materials for 3M Scotch-Weld Anaerobic Activator AC649

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Spec Engine^® Results
- Loctite SF 7649(Henkel)
  A solvent-based primer that features very long on-part life. Use to speed the cure of all Loctite® brand anaerobic products and ensure proper cure on inactive metals. Ideal for cure conditions below room temperature.
- Loctite SF 7471(Henkel)
  A solvent-based primer that speeds the cure of all Loctite® brand anaerobic adhesives and ensures proper cure on inactive metals.
- Loctite SF 7113(Henkel)
  A one component transparent cyanoacrylate activator, very low viscosity is especially suited for post application to exposed cyanoacrylate adhesive outside the bond line.
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