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The MICROLOK® AO process is a new, unique metal coating option for iron and steel components. Applied at 120-140° F, the MICROLOK AO finish is a non-toxic aluminum oxide conversion coating that is 0.000060” (1.5 microns) thick, silver-black in color and tightly bonded to the substrate. When sealed with a rust preventive, the MICROLOK AO finish has excellent corrosion resistance and also provides anti-galling protection and break-in lubricity to critical working surfaces. The process utilizes mild solutions and contains No EPA regulated chemicals; process rinse waters are generally sewerable as non-hazardous discharge.
MICROLOK AO serves as a direct replacement for room temperature copper/selenium-based blackeners or for zinc phosphate coatings, but without the heavy metal content and waste treatment requirements used for these processes.
Ideal for tooling and machine components, piston/cylinder assemblies, rotors & calipers, oil-field equipment or any part that does not require a dark black finish, but does require robust corrosion protection, anti-galling properties or break-in lubricity, without a dimensional change.
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