Armaflex 520 Insulation Adhesive
Armacell’s Armaflex 520 adhesive for gluing joints and cuts in Armaflex elastomeric insulation.
AirGreen codeAG-IS-00501
514 316-2973 · sales@airgreen.ca
Quick facts
Armaflex 520 adhesive is the adhesive Armacell offers for its Armaflex elastomeric insulation. It is used to glue butt joints between two lengths of tube, the slit of insulation fitted over an existing line, and pieces cut from Armaflex sheet.
Why glue insulation joints
On a heat pump suction line, the copper is cold for much of the year. An insulation joint that is simply butted together opens up with vibration and temperature changes; humid air then reaches the metal, condensation forms and runs down the line. A glued joint stays closed and keeps the insulation effective along its whole length.
Two sizes
- 1/2 pint: one residential installation or a few repairs.
- 1 pint: long lines, sheet work and larger jobs.
Precautions
Read the directions and the safety data sheet on the container before use. Apply the adhesive to clean, dry, dust-free surfaces, in a ventilated area and away from any flame: you do not glue insulation while the torch is lit. Close the container tightly after use so the adhesive stays usable.
Available from AirGreen in Greater Montréal
Our refrigeration technicians install Armaflex insulation and glue its joints on every heat pump installation in Montréal, Laval, Longueuil, on the South Shore and on the North Shore. RBQ licence 5645-9605-01. For availability or a quote, call us at 514 316-2973 or email sales@airgreen.ca with the size and quantity.
Insulation joints that stay closed
Unglued insulation opens up over time; 520 adhesive keeps joints shut.
- Butt joints between two lengths of tube insulation
- The slit in insulation cut to fit an existing line
- Pieces cut from Armaflex sheet around a valve or fitting
- Insulation ends at fittings and equipment
2 sizes, one page
Each size has its own AirGreen code. Tap a row to select it.
Container size.
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- Read the directions and safety data sheet on the container before use.
- Apply to clean, dry, dust-free surfaces.
- Work in a ventilated area away from any flame: do not glue while brazing.
- Close the container tightly after use.
You may also need
Armaflex Elastomeric Tube Insulation – 6 ft Length
Armaflex Sheet Insulation – 36 × 48 in
Armaflex Foam Insulation Tape – 1/8 × 2 in × 30 ft
Armaflex Elastomeric Insulation Roll – 3/8 in WallInsulationSee all
Frequently asked questions
Do the joints really need glue?
Yes. A joint that is only butted together eventually opens and lets humid air reach the cold copper: that is where condensation starts.
Which size should I choose?
A half pint covers a residential installation. The pint suits long runs and jobs with a lot of sheet work.
Can I use it with other insulation?
Armacell offers it for its Armaflex insulation. For another brand of insulation, follow that maker’s instructions.
Can you install the insulation?
Yes. Our technicians insulate and glue the lines on every heat pump installation in Greater Montréal.
The adhesive that goes with your Armaflex insulation
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.