There is a small fee for samples shipped in the continental U.S. This can range from $10-$75. Products shipped outside the continental U.S. can be subject to certain restrictions. Freight charges may range from $75-$300.

Insta-Blak SS-370

Room Temperature Blackening Solution for Stainless Steel

Insta-Blak SS-370 is an acidic liquid concentrate used full strength or diluted with up to 3 parts water to blacken stainless steel at room temperature.

Insta-Blak SS-370 is recommended for color coding parts and blackening engravings on stainless steels.

It produces a pleasing dark gray/black finish.