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Custom Electric & Gas Black OxideTanks for Industrial & Job ShopsMade in Steel or Stainless Steel

Du-Lite Black Oxide Blackening Compounds

70% of USA Firearms Manufactures use Du-Lite Black Oxide salts and Rust preventative oils. Salts sold in 25, 50 lbs, via UPS and 500 lb cont. shipped by common carrier. Preventative Oils are sold in 1, 5, and 55 gal containers. 90% of orders shipped same day rec. 5% disc your first order (new customer-only).

Du-Lite manufactures 4 different types of blackening compounds to create different finishes on various types of metals. Browse our products below to learn more. Click on the name of the compound below or scroll down the page.

Du-Lite Steelkote

Black Oxide Salts for blackening cold rolled and regular steel.

Used In Electrically Heated Black Oxide Systems

Du-Lite ships Steelkote in heavy duty industrial 5 and 55 gallon plastic containers with rubber gaskets. The 5 gallon pails have drive on locking covers and the 55 gallon drums have heavy duty plastic covers with locking bands. This will protect the blackening compound salts from contamination and moisture for several years.

SteelKote packaging
Steelkote examples

Top gun barrel was glass bead blasted and will produce a flat black finish. Bottom gun barrel was polished with 600-grit compound and will give a glossy black finish.

Du-Lite Oxiblak

Black Oxide Salts for blackening cold rolled and regular steel.

Used In Gas Heated Black Oxide Systems

Du-Lite ships Oxiblake in heavy duty industrial 5 and 55 gallon plastic containers with rubber gaskets. The 5 gallon pails have drive on locking covers and the 55 gallon drums have heavy duty plastic covers with locking bands. This will protect the blackening compound salts from contamination and moisture for several years.

Black Oxide Salts for blackening cold rolled and regular steel.
Black Oxide Salts for blackening cold rolled and regular steel.

Steel firearm parts black oxided
using Du-Lite's Oxiblak process.

Du-Lite XX Compound

Black Oxide Salts for blackening silver sodered areas after regular black oxide treatment.

Du-Lite ships XX Compound in heavy duty industrial 5 and 55 gallon plastic containers with rubber gaskets. The 5 gallon pails have drive on locking covers and the 55 gallon drums have heavy duty plastic covers with locking bands. This will protect the blackening compound salts from contamination and moisture for several years.

XX Compounds 

Du-Lite 3-0 Salts

Black Oxide Salts for blackening 300 and 400 series stainless steel, Post '64M94 Winchester receivers, malleable and cast iron.

Du-Lite ships 3-0 Salts in heavy duty industrial 5 and 55 gallon plastic containers with rubber gaskets. The 5 gallon have heavy duty plastic covers with locking bands. This will protect the blackening compound salts from contamination and moisture for several years.

Black Oxide Salts for blackening 300 and 400 series stainless steel, Post '64M94 Winchester receivers, malleable and cast iron.
Du-Lite 3-0 Salts products

The buckle is made out of 400 series stainless and the screws are made from 300 series stainless steel. Both items have been black oxided using Du-Lite's 3-0 Salts.

The Easy Opener

Due to new shipping regulations by the DOT, we are now required to ship our hazardous and corrosive materials in five-gallon pails with drive on covers. Some of our customers are having trouble removing these covers and have elected to purchase from us "The Easy Opener"; it removes the lid with ease. If you do not already have this device we suggest you include this with your order.

  Easy Opener