Schaefer Brush 43539 Spiral Tube Brush 1-1/2 in Stainless

Product Description

The SCHAEFER BRUSH 43539 is a double stem, double/single spiral tube brush designed for cleaning the interior surfaces of tubes, pipes, and bores. Built with stainless steel bristles and a stainless steel brush construction, it delivers durable scrubbing action resistant to corrosion and chemical exposure. The brush measures 1-1/2 inches in diameter with a brush length of 4-1/2 inches and an overall length of 7-1/4 inches. The 1/4 inch male NPSM connection allows secure attachment to compatible extension handles and drive equipment. This tool is suited for maintenance technicians, HVAC service pros, plumbers, and industrial cleaning personnel.

This tube brush is used in applications that require thorough interior cleaning of tubing, heat exchanger tubes, condenser tubes, pipe fittings, and similar bore surfaces. The double stem construction adds rigidity and support to the bristle fill, making it effective for light to moderate deposit removal in both residential and commercial service environments. It is typically used during scheduled maintenance, coil cleaning, or pipe inspection prep where consistent bore contact is required.

Key Features

• Double stem construction provides added rigidity and consistent bristle contact throughout the bore
• Double/single spiral fill pattern ensures thorough coverage of the interior tube surface
• Stainless steel bristles resist corrosion and hold up to cleaning solvents and water-based solutions
• 1/4 inch male NPSM connection is compatible with standard extension handles and drive tools
• Overall length of 7-1/4 inches with a 4-1/2 inch active brush length suits a range of tube depths
• Lightweight at 0.38 pounds for easy one-hand maneuverability during service

Compatibility

Designed as a replacement or maintenance brush for tubes and bores with a 1-1/2 inch interior diameter, compatible with any drive handle or extension rod using a 1/4 inch male NPSM threaded connection.

Installation Notes

This brush is installed by hand or with a compatible drill or rotation tool — ensure the NPSM connection is firmly threaded onto the extension handle before use. Always wear appropriate eye protection and gloves when cleaning tube interiors, especially when using chemical solvents. Confirm the system being serviced is depressurized and drained before inserting the brush into active piping or heat exchanger tubes. Do not force the brush into a bore smaller than the rated 1-1/2 inch diameter, as this can deform the bristle fill and reduce cleaning effectiveness.