LOCTITE^® PC 7319

How to use

1. Preparation - Metal Surfaces

Clean, dry, and abrade the application surface, as more thorough preparation results in better performance; whenever possible, grit-blast the surface to a Near White Metal (SSPC-SP10/NACE No. 2) standard, while for less severe applications, roughening the surface with hand tools is acceptable. Finally, perform a solvent cleaning with a residue-free solvent to promote optimal adhesion.


2. Preparation - Concrete

Concrete must be cured for at least 30 days before application. All grease, oil, and dirt should be thoroughly removed by washing, and surface contaminants such as old coatings, loose concrete, and dust must be eliminated by dry abrasive blasting, water blasting, scarifying, or acid etching, followed by thorough rinsing. The prepared surface should be rough, free of excess water, and achieve a surface profile of CSP 3 to CSP 5 in accordance with ICRI Guideline 03732. All surface irregularities, including joints, holes, pores, and cracks, must be properly filled, and the concrete must be completely dry before applying the product.


3. Preparation - Mixing

The material temperature should be maintained between 18 °C and 27 °C. Mix the entire contents of resin and hardener, or for smaller amounts, mix 2.3 parts resin to 1 part hardener by volume, or 3.4 parts resin to 1 part hardener by weight, and then mix vigorously for 3-5 minutes until a uniform color is obtained.


4. Applications

Apply the fully mixed material to the prepared surface using a brush or a 3/8 in nap roller with a good core, and immediately clean any contaminated skin or clothing with soap and water.


5. Caution

Use an approved positive-pressure, supplied-air respirator when welding or torch cutting near cured compound, an approved self-contained breathing apparatus when burning, welding, or torch cutting indoors near cured compound, and an approved respirator for dusts and mists when grinding or machining cured compound. Do **not** use open flame on the compound. Refer to the Material Safety Data Sheet for additional cautions.


6. Note

Working time and cure of epoxies depend on temperature and mass, with higher temperatures and larger material masses accelerating curing. To speed curing at low temperatures, store the epoxy at room temperature and pre-heat the repair surface until warm to the touch. To slow curing at high temperatures, mix the epoxy in small masses and cool the resin and hardener components.