Schaefer Brush 43748 Spiral Tube Brush Nylon 2.25in Dia

Product Description

The SCHAEFER BRUSH 43748 is a single stem spiral tube brush designed for cleaning the interior of pipes, tubes, and cylindrical passages. It measures 2.25 inches in diameter and 7.25 inches overall length, with a 5-inch brush section that provides effective scrubbing contact across a wide bore surface. The bristles and brush body are constructed from nylon, making it suitable for applications where non-metallic contact is required to avoid scratching or corroding delicate interior surfaces. A 1/4-inch NPSM male connection on the stem allows attachment to standard extension handles or drill adapters. HVAC service techs, plumbers, and maintenance professionals use this brush for tube cleaning on heat exchangers, condensers, and piping systems.

This tube brush is well suited for residential and light commercial service work where internal bore cleaning is required. It fits into standard tube and pipe cleaning routines for HVAC coil headers, plumbing supply lines, and similar cylindrical components. The nylon bristle construction makes it appropriate for aluminum, copper, and plastic tubing where steel bristles would cause surface damage. The 1/4-inch NPSM male fitting is a widely used connection size compatible with common drill-mounted brush extension systems used in the field.

Key Features

• 2.25-inch brush diameter sized for standard tube and pipe interior cleaning
• Nylon bristles resist corrosion and will not scratch soft metal or plastic tube walls
• 5-inch brush length provides extended contact for thorough bore cleaning
• 1/4-inch NPSM male connection compatible with standard extension handles and drill adapters
• Lightweight at 0.26 pounds for easy one-hand handling during service

Compatibility

Designed as a general-purpose replacement-style spiral tube brush for use in HVAC, plumbing, and industrial maintenance applications requiring a 2.25-inch diameter nylon bore brush with a 1/4-inch NPSM male stem connection.

Installation Notes

This brush is installed by hand or with a compatible drill adapter using the 1/4-inch NPSM male stem. Before use, ensure the tube or pipe section to be cleaned is depressurized and, where applicable, de-energized or isolated from the system. Use appropriate eye and hand protection when operating rotary brushes in confined tube passages. Follow applicable OSHA and facility safety guidelines when working inside HVAC equipment or pressurized piping systems.