Du-Lite Corporation

Middletown, CT

Since 1939, Du-Lite has been a leading supplier of black oxide finishing equipment, chemicals, and accessory products to American and foreign manufacturers.

Du-Lite® is the world leading supplier of Black Oxide (Bluing Chemicals), Manganese Phosphate (Parkerizing Solution), Kwikseal® Firearm Lubricant and Rust Preventative Oil. No one sells more chemicals, equipment or firearm rust preventative oils to the firearm manufacturers and dealers than Du-Lite®.

Kwikseal® is used by most major firearm manufacturers to protect their firearms while in storage and during shipments to their dealers. The list of manufacturers include; Ruger, T/C, KEL-TEC, Kimber, STI, Les Baer, Caspian Arms, U.S. Fire Arms Mfg. Co. and Ed Brown among others. Over 3,000 satisfied customers worldwide! Call us today and we will solve your metal finishing problems.

Du-Lite®’s chemical processes were originally developed to replace highly poisonous cyanide methods of black oxide, Du-Lite®’s black oxide process called Oxiblak™ does not contain cyanide, mercury or heavy metals which are detrimental to the environment and a health hazard for the operator.

An important part of our success has been the technical support we provide to our customers. We maintain a complete lab facility to assist customers in solving their most difficult black oxide problems. Our technicians are available to answer questions from the field and we also maintain our own black oxide production facility which is used to test sample parts. This allows proper recommendations of equipment and chemicals to prospective users.

Du-Lite®’s manufactures black oxide chemicals for steel, stainless steel, cast iron, silver solder, copper and brass as well as the metal finishing equipment specially engineered for our products.

90% of orders are shipped same day!

Orders ship via UPS Ground out of CT and deliver in 2-4 business days depending on your address. If you need expedited options, please call us or message in the Gear Bot!

Orders of $1,500.00 or more freight will be paid by Du-Lite to the following states CT, MA, RI

Orders of $2,500.00 or more freight will be paid by Du-Lite to the following states VT, NH, ME

Orders of $3,500.00 or more freight will be paid by Du-Lite to the following states NY, PA, NJ

Orders of $4,500.00 or more freight will be paid by Du-Lite to the following states OH, WV, VA

Thanks for shopping online at Du-Lite Corporation. Your business is very important to us, and if for any reason you are not entirely satisfied with your purchase, we’re here to help. We stand behind all of our products and will refund your purchase and shipping costs.


> Please alert us within 2 weeks of receiving your Du-Lite product if you are unhappy and would like to make a return.

> To start the return process please contact us at 860-347-2505 to describe your issue and receive a Return Authorization.

> Returns generally take 7-10 business days to process once we receive the returned product at Du-Lite.

> You will receive a refund for the cost of your purchase including shipping costs.

> Your refund will be credited in the same manner used for payment of the original order unless noted otherwise.

> We will not charge you for the return shipping costs of your Du-Lite product.

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