Pferd 79189604 Horsehair Acid Brush Flux 0.75in X 6in

Product Description

The PFERD 79189604 is a horsehair acid brush designed for applying flux during soldering and brazing operations. The brush features a tin handle with a 0.75-inch wide black horsehair bristle head and measures 6 inches in overall length. The 1-inch bristle length provides controlled, even flux coverage on pipe fittings, copper tubing, and sheet metal joints. Plumbers, HVAC technicians, and pipefitters rely on this style of brush for precise flux application before sweating joints or silver-brazing refrigerant lines. The tin handle resists mild acid exposure and gives the user a firm grip during close work.

This acid brush is suited for residential and light commercial plumbing and HVAC applications where flux must be applied to clean, prepared metal surfaces before heat is introduced. It is a standard single-use or short-service-life tool kept in most plumbers and HVAC technicians tool pouches. Common uses include copper sweat connections, flux-coated brazing rod work, and any task requiring a small, disposable applicator brush on a job site.

Key Features

• Horsehair bristles provide soft, flexible contact for even flux distribution
• Black bristle color allows visual inspection of flux coverage
• Tin handle resists mild acid and flux chemistry
• 0.75-inch bristle width suits standard pipe fittings and small joint surfaces
• 6-inch overall length keeps hands clear of hot work areas
• Compact, lightweight design at 0.04 pounds for everyday carry

Compatibility

Designed for use with soldering and brazing flux on copper, brass, and similar metal surfaces in standard plumbing and HVAC installations.

Installation Notes

Applied by plumbers and HVAC technicians as part of the joint preparation process before soldering or brazing. Ensure metal surfaces are clean and dry before applying flux with the brush. Follow applicable plumbing codes such as the IPC and IFGC regarding approved flux types and joint preparation methods. Dispose of or clean the brush promptly after use, as residual flux can degrade bristles and the tin handle over time.