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 333

Insta-Blak 333 – A Great Alternative to Hot Black Oxide

Insta-Blak 333 represents a major breakthrough in the room temperature blackening of iron and steel.  In fact, it produces a black finish equal in depth of blackness and in corrosion resistance to that obtained with the conventional hot black oxide processes.  ORDER SAMPLE

It is recommended for blackening cold and hot rolled carbon steels, alloy steels, tool steels, as well as cast iron, forged steels and powdered metal.  It will not blacken stainless steels.  We have also found that it works in blackening sterling silver.

Simple Process, Superior Finish

Clean, Deep Finish: No smutty rub-off as with other room temperature blackening processes. Insta-Blak 333 produces a super-deep, rich blackness and corrosion resistance equal to hot black oxide. There is no white salt bleed-out as is common with hot black oxide. For more information check out our Black Oxide FAQ.

Insta-Blak Turnkey Blackening Equipment

Looking to upgrade, expand or add a black oxide finishing line? EPi provides turnkey blackening setups to make your installation a quick, easy, and inexpensive process.


Request a quote or get more information on Insta-Blak Turnkey Metal Blackening Equipment or find out more about a Short Run Production Kit for smaller jobs.

1/2 ounce Touch Up Bottle now available online - Learn More