Advance Brush 89603 Acid Brush

The Advance Brush 89603 Acid Brush provides precise manual application of flux, solvents, adhesives, lubricants, and protective coatings with natural black horsehair bristles designed to minimize contamination during maintenance and fabrication processes. The brush is built for manual use with a tin-plated metal handle and measures 1/2 in wide bristles, 6 in overall length, and 7/8 in trim length, making it well-suited for controlled liquid application in welding shops, soldering stations, and metal fabrication facilities. It is commonly used by maintenance technicians, welders, and manufacturing personnel for equipment maintenance, brazing, soldering, cleaning, and general-purpose coating tasks in electronics assembly, machinery maintenance, and industrial repair. Packaged in a box of 144 brushes, the 89603 has common replacements including 89601, 89602, and 89604.