Staining Fluids | McMaster-Carr

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DFARS Specialty Metals

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4 Products

Marking Fluids


Applicator-Top Can	Can

Stain metal items such as bearings, springs, nuts, and other components. These fluids repel oil, adhere without flaking and scaling, and won’t interfere with part performance.

Opaque—Opaque fluids conceal the color of the part.

Clear—Clear fluids allow the color of the part to show through and are thinner and dry faster than opaque fluids.

Cannot Be Sold Outside United States—Fluids that cannot be sold outside the United States exceed local regulatory limits on VOCs (volatile organic compounds).

Container Size	Fluid Type	Clarity	Container Type	Cannot Be Sold To	Choose a Color
8 fl. oz.	Liquid	Opaque	Applicator-Top Can	Outside United States	Dark Blue , Red , White , Yellow	2131A68
1 gal.	Liquid	Opaque	Can	Outside United States	Black , Dark Blue , Dark Green , Light Blue , Light Green , Red , White , Yellow	2131A73
1 gal.	Liquid	Clear	Can	Outside United States	Dark Blue	2131A202

High Spot Blue Marking Paste

Identify high spots, interference points, and improper fit on bearings, gears, and valves. Apply this blue paste, also known as engineers’ blue, to parts or components and assemble them into working position. Any improper fit will show up as a blue streak. Remove paste with Marking Fluid Remover.

Cannot Be Sold Outside United States—Paste cannot be sold outside the United States because it exceeds local regulatory limits on VOCs (volatile organic compounds).

Container Size, fl. oz.	Fluid Type	Clarity	Container Type	Color	Cannot Be Sold To		Each
0.55	Paste	Opaque	Tube	Blue	Outside United States	6165K11	000000