Mill-rose 4865 Horsehair Tube Brush 3/4 in X 9 in Boiler

Product Description

The MILL-ROSE 4865 is a horsehair tube brush designed for cleaning boiler tubes, burner ports, radiator passages, flue liners, vent pipes, and nozzle openings. Built around a 3/4 inch diameter brush head on a 9 inch overall length, this brush reaches into tight passages where buildup restricts airflow and combustion efficiency. The stem measures 0.13 inches in diameter, keeping the profile narrow enough to navigate small-bore tubing. HVAC technicians and plumbers use it during routine maintenance and seasonal service to clear soot, scale, and debris from heat exchanger components and venting systems.

This brush is suited for residential and light commercial applications. It works across a range of cleaning tasks including boiler tube maintenance, radiator core cleaning, flue and vent passage clearing, and nozzle service. The horsehair bristles are firm enough to dislodge debris while remaining gentle enough to avoid damaging tube walls or delicate vent surfaces. Each brush carries an individual UPC label on the handle for inventory tracking and jobsite organization.

Key Features

• 3/4 inch brush diameter fits standard boiler tubes and vent passages
• 9 inch overall length provides reach into confined heat exchanger sections
• Horsehair bristles suitable for soot, scale, and light debris removal
• 0.13 inch stem diameter allows entry into narrow-bore openings
• Individual UPC label on handle supports inventory and identification
• Applicable across boiler, burner, radiator, flue, vent, and nozzle cleaning tasks

Compatibility

Designed for use in boiler tube cleaning, burner port service, radiator passage maintenance, flue and vent line clearing, and nozzle cleaning applications common in residential and light commercial heating systems.

Installation Notes

Shut down and allow the boiler or heating system to cool completely before beginning any tube or flue cleaning. Licensed HVAC technicians and plumbers should follow local codes and manufacturer service guidelines when accessing combustion chambers, heat exchanger tubes, and venting components. Inspect the brush bristles before use and replace the brush if the head is deformed or bristles are significantly worn, as a compromised brush will not clean effectively.

Technical Specifications

• Brush Type: Tube Brush
• Brush Diameter: 3/4 inch
• Overall Length: 9 inches
• Stem Diameter: 0.13 inches
• Bristle Material: Horse Hair
• Application: Boiler, Burner, Radiator, Flue, Vent, Nozzle

Standard Information

• Brand: MILL-ROSE
• Manufacturer Part Number: 4865