Birchwood Casey's Microlok AO Process forms a non-toxic, aluminum oxide conversion coating on components

The Microlok AO Process from Birchwood Casey forms a non-toxic, aluminum oxide conversion coating that is 0.000060 inches (1.5 microns) thick, silver/black in color and adheres tightly to metal surfaces. When sealed with a rust preventive, the finish provides corrosion protection that is better than cold blackening without undesirable pollution hazards.

The Microlok AO solution contains no regulated chemicals — process rinse waters are generally sewerable as nonhazardous discharge. Applying the finish requires only five steps and 15 minutes:

  1. Clean the metal surface: Safe Scrub; 120-140°F: 5 minutes.
  2. Rinse in clean water.
  3. Apply Microlok AO finish: 120-140°F: 8 minutes.
  4. Rinse in clean water.
  5. Seal in Dri Touch Amber Rust Preventive: 1 minute.

Additional benefits include:

  • Anti-galling protection to aid in assembly and startup
  • Temperature stability up to 1400°F
  • Safe 120-140°F operation with no boiling or splattering
  • No scale or sludge buildup in tanks
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