Schaefer Brush 43658 Tube Brush 3.25 in Dia 8 in Oal Brass

Product Description

The SCHAEFER BRUSH 43658 is a double stem, single spiral tube brush designed for cleaning the interior of tubes, pipes, and bores. The brush measures 3.25 inches in diameter with an overall length of 8 inches and a brush length of 4.5 inches. Brass bristles provide effective scrubbing action while resisting corrosion in wet or chemical environments. Connection is made via a 1/4-inch NPSM threaded stem, allowing attachment to standard extension handles or drive equipment. This type of brush is a standard tool for HVAC technicians, plumbers, and maintenance professionals performing tube cleaning and deburring tasks on heat exchangers, condensers, and piping assemblies.

This tube brush is suited for residential and commercial maintenance applications where internal bore cleaning is required. It is commonly used in HVAC condenser tube cleaning, plumbing pipe preparation, and general industrial maintenance. The double stem construction provides added rigidity, making it effective in moderately fouled or scale-lined tubes. The 1/4-inch NPSM connection is compatible with widely available brush extension handles and drill adapters used in the trade.

Key Features

• 3.25-inch brush diameter for cleaning tubes and bores of matching internal size
• Brass bristle construction resists corrosion and is safe for use on soft metal tube walls
• Double stem, single spiral configuration provides uniform bristle distribution and added rigidity
• 4.5-inch brush length for thorough interior surface contact
• 1/4-inch NPSM threaded connection for use with standard handles and drill attachments
• Compact 8-inch overall length suits a range of access scenarios

Compatibility

Designed as a standard replacement and maintenance tube brush for use with 1/4-inch NPSM-threaded extension handles and adapters. Suitable for cleaning tubes and bores with an internal diameter matched to the 3.25-inch brush diameter.

Installation Notes

Thread the 1/4-inch NPSM stem securely onto a compatible extension handle or drill adapter before use. Ensure the system or equipment being serviced is depressurized, drained, and de-energized prior to inserting the brush into any tube or bore. Apply consistent, even strokes to avoid bristle distortion. Brass bristles are appropriate for softer tube materials but should not be forced into undersized openings.