For steel components, a non-dimensional Presto Black finish is a perfect, low cost way to create good corrosion protection. This black oxide finish also enhances the sales appeal for your products. When properly sealed, Presto Black finish will resist rust, and is lab tested for up to 1,200 hours of humidity without chipping or peeling. Presto Black has a uniform 0.000030 inch (1 micron) thickness. The porous crystalline structure of the black finish makes an excellent absorbent base for a rust preventive top coat.
Check out all the Presto Black options for immersion production scale lines, brush-on liquid and gel formula. Scroll down to see options.
Versatile blackening solution. Concentrate can be brushed, sprayed, or used as immersion. Dilutable with water, 10% for standard immersion bath or 50/50 for brush-on applications. Produces darkest black on steel and iron alloys.
Instant acting Blackener/touch-up for tools/machine parts or decorative surfaces. Reacts with steel and iron to create black patinas, with artistic techniques can achieve gray/black or blue/black appearances.
Unique Gel formula has a slower reaction than BST4 Liquid, giving the user an extra measure of control when dealing with large surfaces. Gray/Black finish.
