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The SCHAEFER BRUSH 93602 is a double stem, single spiral tube brush designed for cleaning the interior of small-diameter tubes, ports, and passages. The brush features brass bristles mounted on a brass construction with a 0.25 inch diameter brush head and a 4.5 inch overall length. The 8-32 male threaded connection allows the brush to be attached to extension rods or powered drive equipment. It is typically installed or used by HVAC technicians, plumbers, and maintenance professionals who need to clean heat exchanger tubes, refrigerant ports, valve seats, or similar small-bore components.
This tube brush is suited for light to moderate cleaning tasks in residential and commercial maintenance applications. The brass bristle material makes it compatible with softer tubing materials where steel bristles could cause scoring or surface damage. The 3 inch brush length provides adequate scrubbing reach inside short tube sections, while the threaded male fitting enables use with standard extension handles for deeper access when needed.
Designed as an OEM-style replacement or standard service brush for small-bore tube cleaning applications in HVAC, plumbing, and general maintenance. Specific model compatibility was not provided in the product data.
This brush is a hand tool or drive-tool accessory used by HVAC technicians, plumbers, and maintenance professionals. Before cleaning any tube or port, shut off and isolate the system being serviced in accordance with applicable safety procedures. When using with a powered drive, match the brush rotation direction to the spiral orientation to avoid unraveling. Inspect bristles before use and replace if wires are bent, broken, or separated from the stem.
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