How To Coat Engine and Small Parts for Rust Prevention with Black Oxide

How To Blacken Steel and Cast Iron Using Black Oxide Coating

1. Clean

   In a steel container, thoroughly clean the parts in a 10% by volume solution of E-Kleen SR 148-E and 90% by volume of water. The cleaning time will depend upon the type and degree of soil present on the metal surfaces and the concentration and temperature of the E-Kleen SR-148-E solution.

2. Rinse

   Using a plastic container, rinse the parts for 1-2 minutes in clear running room temperature water.

3. Activate (optional)

   Using a plastic container, activate the surface of the parts in a 20% by volume E-Prep 258 solution and 80% by volume water for 2 minutes for optimal activation at room temperature.

4. Rinse (if Activated)

   Using a plastic container, rinse the parts for 1-2 minutes in clear running room temperature water.

5. Blacken

   In a plastic container, blacken the parts in a 10% by volume solution of Insta-Blak 333 and 90% by volume of water at room temperature for 2-5 minutes.

6. Rinse

   Using a plastic container, rinse the parts for 1-2 minutes in clear running room temperature water.

7. Seal and Finish

   In a steel container, seal the finish and enhance the depth of blackness.
   
   Option 7a. For an oily finish: use E-Tec 501
   Option 7b. For a slightly oily to a semi-dry finish: use E-Tec 503
   Option 7c. For a soft, non-tacky, dry-to-the-touch finish: E-Tec 504 or E-Tec 505+
   
   Place the blackened parts into the E-Tec solution of your choice, and agitate 6-12 times up and down (about 1-2 minutes).
   
   Air dry for 15-30 minutes.
   
   Typically, 24 hours later, the part will be blacker as the oil absorbs into the blackened finish