Brownells Zinc Parkerizing Pre-Dip Blackener, 1 qt Plastic Bottle

Generates a deep black hue that maintains the characteristic crystal sparkle of zinc parkerized finishes. It substitutes the hot water rinse in the standard zinc parkerizing procedure. This solution does not require heating or costly tank installations; simply immerse the parts in the pre-dip for 15 sec prior to transferring them to the parkerizing bath. The concentrated solution is easy to mix and apply, offering cost savings as it can be stored and reused. Combine with hydrochloric acid and water for optimal results.