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topic 28407

TT-L-50 (Clear Acrylic Lacquer Aerosol) Replacement

A discussion started in 2004 but continuing through 2018


Q. Is anyone aware of a product (preferably governed by a military or commercial standard) that can be used in lieu of the canceled TT-L-50 spec. (clear, acrylic lacquer aerosol, Type II). The lacquer is currently used to protect ink (A-A-208) stenciling on a TGIC powder coated component. The alternative lacquer should not be detrimental to either the ink or the powder coating.


Marc Pepi
Naval Air Warfare Center - China Lake, California, USA


A. So far, there is no replacement for TT-L-50, so a clear acrylic lacquer in a spray can is your only option (?).

The State of California, with their tough environmental laws, prohibits the use of coatings that exceed 2.3 lbs/gal VOC. A manufacturer can put a compliant acrylic lacquer into an aerosol can, but the propellant used will push the VOCs over the limit in no time. The State of California exempts the use of aerosolized paints from their regulations (as the federal government should do as well).

If you can't use a can of aerosol clear lacquer, either get a spray booth installed and use a VOC compliant coating, or find somebody that can do the work for you.

Jake Koch
G. J. Nikolas & Co., Inc.
supporting advertiser
Bellwood, Illinois
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A. I have found the Krylon KO1313 is a direct cross-reference for the TT-L-50G, CONFORMING TO MIL-C-17504B. I hope this helps.

Mark Schwartz
- stuart, florida, usa

May 2, 2018

Q. Where did you find the cross reference from TT-L-50G to the Krylon KO1313? If you could post that up, it would be greatly appreciated.

John Wheelis
SR Machining, Inc. - Norco, California United States

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