Armaflex Elastomeric Tube Insulation – 6 ft Length
The 6 ft Armaflex insulation tube that keeps refrigerant lines dry and cuts heat loss.
AirGreen codeAG-IS-00101
514 316-2973 · sales@airgreen.ca
Quick facts
Armacell’s Armaflex elastomeric tube insulation slides over copper piping and forms a continuous sleeve around the line. Its closed-cell foam keeps humid air from reaching the cold metal: no condensation dripping into a ceiling, and less heat lost between the outdoor unit and the indoor unit.
Insulating a refrigerant line along its full length
We use it on suction lines and, when needed, on the liquid lines of wall-mounted, central and multi-zone heat pumps. The 6 ft lengths are easy to handle in a wall, a ceiling or a service chase, and are also used to replace insulation that has been crushed or dried out by the sun.
Twelve diameters, three wall thicknesses
- 3/8 in wall: 1/4 in to 2-5/8 in pipe.
- 1/2 in wall: 3/8 in to 3-1/8 in pipe.
- 3/4 in wall: 3/8 in to 2-1/8 in pipe.
The colder the line and the more humid the location, the thicker the wall should be. Each combination has its own AirGreen code and Armacell part number, shown when you select it.
Installation tips
Slide the insulation on without stretching it, glue the butt joints with Armaflex 520 adhesive and close exposed joints with Armaflex foam tape. Keep the insulation away from the flame during brazing. Outdoors, the foam must be protected from the sun with a suitable covering.
Installed by AirGreen in Greater Montréal
Our refrigeration technicians insulate the refrigerant lines on every heat pump installation in Montréal, Laval, Longueuil, on the South Shore and on the North Shore. RBQ licence 5645-9605-01. To check availability or get a quote, call us at 514 316-2973 or email sales@airgreen.ca with the pipe diameter, the wall thickness and the quantity.
Insulation that stops condensation on cold lines
The tube slides over the copper line and forms a continuous jacket around it.
- Suction lines of wall-mount, central and multi-zone heat pumps
- Replacing damaged, crushed or dried-out insulation on an existing line
- Liquid lines running through a wall, a ceiling or a crawl space
- Commercial refrigeration piping
30 sizes, one page
Each size has its own AirGreen code. Tap a row to select it.
| Pipe Diameter | Wall Thickness | Part no. | AirGreen code |
|---|---|---|---|
| 1/4 in | 3/8 in | APT01438 | AG-IS-00101 |
| 3/8 in | 3/8 in | APT03838 | AG-IS-00102 |
| 1/2 in | 3/8 in | APT01238 | AG-IS-00103 |
| 5/8 in | 3/8 in | APT05838 | AG-IS-00104 |
| 3/4 in | 3/8 in | APT03438 | AG-IS-00105 |
| 7/8 in | 3/8 in | APT07838 | AG-IS-00106 |
| 1-1/8 in | 3/8 in | APT11838 | AG-IS-00107 |
| 1-3/8 in | 3/8 in | APT13838 | AG-IS-00108 |
| 1-5/8 in | 3/8 in | APT15838 | AG-IS-00109 |
| 2-1/8 in | 3/8 in | APT21838 | AG-IS-00110 |
| 2-5/8 in | 3/8 in | APT25838 | AG-IS-00111 |
| 3/8 in | 1/2 in | APT03812 | AG-IS-00112 |
| 1/2 in | 1/2 in | APT01212 | AG-IS-00113 |
| 5/8 in | 1/2 in | APT05812 | AG-IS-00114 |
| 3/4 in | 1/2 in | APT03412 | AG-IS-00115 |
| 7/8 in | 1/2 in | APT07812 | AG-IS-00116 |
| 1-1/8 in | 1/2 in | APT11812 | AG-IS-00117 |
| 1-3/8 in | 1/2 in | APT13812 | AG-IS-00118 |
| 1-5/8 in | 1/2 in | APT15812 | AG-IS-00119 |
| 2-1/8 in | 1/2 in | APT21812 | AG-IS-00120 |
| 2-5/8 in | 1/2 in | APT25812 | AG-IS-00121 |
| 3-1/8 in | 1/2 in | APT31812 | AG-IS-00122 |
| 3/8 in | 3/4 in | APT03834 | AG-IS-00123 |
| 5/8 in | 3/4 in | APT05834 | AG-IS-00124 |
| 3/4 in | 3/4 in | APT03434 | AG-IS-00125 |
| 7/8 in | 3/4 in | APT07834 | AG-IS-00126 |
| 1-1/8 in | 3/4 in | APT11834 | AG-IS-00127 |
| 1-3/8 in | 3/4 in | APT13834 | AG-IS-00128 |
| 1-5/8 in | 3/4 in | APT15834 | AG-IS-00129 |
| 2-1/8 in | 3/4 in | APT21834 | AG-IS-00130 |
Size of the pipe to insulate, then the insulation wall thickness. Not every combination is available.
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- Pick the size of the pipe to insulate first, then the wall thickness.
- Do not stretch the insulation to make it longer: it thins out and the joints open over time.
- Glue butt joints with Armaflex 520 adhesive to keep humid air out.
- Keep the insulation away from the flame while brazing.
- Outdoors, protect the foam from sunlight with a suitable finish.
You may also need
Armaflex 520 Insulation Adhesive
Armaflex Foam Insulation Tape – 1/8 × 2 in × 30 ft
Armaflex Elastomeric Insulation Roll – 3/8 in Wall
A.C.R. Soft Copper Tube – 50 ft Coil
Copper Pipe Clamp
Armaflex Sheet Insulation – 36 × 48 inInsulationSee all
Frequently asked questions
Which wall thickness should I choose?
The colder the line and the more humid the space, the thicker the wall. A 3/8 in wall suits many residential lines; 1/2 and 3/4 in walls are for humid or unheated spaces and colder suction lines.
Does the liquid line need insulation?
The suction line (the larger one) always does. On a heat pump the liquid line is often insulated too, since it runs hot or cold depending on the mode. Follow the equipment installation manual.
How do I join two lengths?
Butt the ends together without stretching them and glue them with Armaflex 520 adhesive. On an exposed joint, add Armaflex foam tape.
Can you install it?
Yes. Our technicians insulate the refrigerant lines on every heat pump installation, everywhere in Greater Montréal.
Refrigerant lines insulated right
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.