MarkingPenDepot

A standard permanent marker or industrial paint marker might leave a perfectly visible line. However, in applications where corrosion, contamination, or material purity is a concern, using the wrong marking product could create problems you didn't anticipate.

If you've ever tried marking a greasy steel part with an ordinary marker, you know how frustrating it can be. The paint skips across the surface, the line smears, or the mark disappears before the job is finished.

In industrial environments, oily metal is common. Cutting fluids, machining oils, hydraulic fluids, protective coatings, and grease can all make it difficult to apply a clear, reliable mark.

Torque sealant, also called torque seal or torque-indicating paste, is a special marking compound applied across a tightened fastener and an adjoining surface. It creates a visible witness mark that helps inspectors determine whether the fastener or connected component may have moved since the mark was applied.