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Du-Lite Products for Removing Trapped & Occluded Salts

Some parts have a tendency to absorb or retain processing salts during the black oxide process. These trapped salts may not show up immediately on finished work, but, in time, the retained salts will appear in the form of a whitish powder or haze on the finished piece. Barreled receivers, cast and malleable iron, powdered metal parts, laminated parts and parts with blind holes are particularly susceptible to this problem. To overcome this problem, Du-Lite manufactures several chemical compounds. Browse these products below to learn more.

Du-Lite Products for Removing Trapped & Occluded Salts

Powdered metal, cindered metal, metal injected molding (MIM) metal, and firearms with barrels and receiver assembled are prone to bleed out retained salts which will appear in the form of a whitish powder or haze on the finished piece. Du-Lite's SD Compound or Necco #2 will penetrate areas where salts are trapped, removing or neutralizing salts therefore solving this problem.

Du-Lite SD Compound

Petroleum Compound. Removes occluded, trapped or retained salts from blind holes or barreled actions. Du-Lite ships SD Compound in heavy duty industrial 5 Gallon and 55 Gallon Drums.

Du-Lite Necco #2

Acidic Grandular Compound. Neutralizes occulded salts in sintered parts and barreled actions. We offer Necco #2 in the following sizes: 25 lbs., 50 lbs., 100 lbs., and 400 lbs.