Abrasive Cloth for Copper (Plumber’s Sand Cloth)
Abrasive cloth on a roll that takes copper back to bare metal before brazing.
AirGreen codeAG-BR-00202
514 316-2973 · sales@airgreen.ca
Quick facts
Abrasive cloth for copper, also called plumber’s sand cloth, is an abrasive strip on a cloth backing, 1-1/2 in wide, sold in 10 or 25 yard rolls. It is used to clean the outside of copper tubes before brazing or soldering.
Why preparation makes the difference
Brazing alloy only flows properly into a joint if the metal is clean. Oxide, grease from fingers and job-site dirt keep it from wetting the copper, and the joint may leak during the pressure test. A few passes of cloth bring the tube back to bright metal, where it will go into the fitting.
Two roll lengths
- 10 yards (about 9.1 m): a handy size for the tool kit.
- 25 yards (about 22.9 m): for the shop, the truck or large job sites.
The cloth backing wraps around the tube without tearing, so you can work all the way around a tube with a back-and-forth motion.
Cleaning properly without contaminating the line
Clean only the part of the tube that will go into the fitting. Hold the opening downward so particles do not fall into the line: in a refrigerant circuit, they can clog a filter or an expansion valve. Wipe with a clean cloth, then do not touch the cleaned surface again. For the inside of fittings, use a brush sized for the diameter.
Available from AirGreen across Greater Montréal
Our refrigeration technicians prepare and braze refrigerant lines in Montréal, Laval, Longueuil, the South Shore and the North Shore. To check availability or get a quote, call us at 514 316-2973 or email sales@airgreen.ca with the roll length and quantity.
A clean joint starts with a clean tube
Brazing alloy only wets clean metal; the cloth removes oxide and dirt from the copper.
- Cleaning the outside of tubes before fitting them into a fitting
- Cleaning the male end of street elbows
- Preparing an existing line before a repair
- Bringing tarnished or oxidized copper back to bare metal
2 sizes, one page
Each size has its own AirGreen code. Tap a row to select it.
Roll length in yards; width is 1-1/2 in for both.
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- Clean only the part of the tube that goes into the fitting, down to bright metal.
- Hold the tube end down so particles do not fall into the line.
- Wipe the tube with a clean rag before fitting and do not touch the cleaned surface again.
- For the inside of fittings, use a brush sized for the tube.
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Frequently asked questions
Why clean copper before brazing?
Oxide, grease and dirt stop the alloy from wetting the metal and flowing into the joint. A clean tube gives a tight joint the first time.
Should the inside of the fitting be cleaned too?
Yes. The cloth is for the outside of the tube; for the inside of a fitting, use a brush sized for the tube.
Can particles get into the line?
Avoid it. Keep the opening down while cleaning and wipe before fitting: in a refrigerant circuit, particles can plug a metering device or a filter.
Do you do the brazing work?
Yes. Our technicians prep and braze every refrigerant line joint on our installations in Greater Montréal.
Abrasive cloth for clean joints
Tell us the size and the quantity: we confirm availability and send you a quote. Or let our technicians install it for you.
Specifications from the manufacturer’s documentation, checked on October 7, 2026.