Insul-Tube Pipe Insulation 1-5/8" ID 6 ft NBR/PVC

Pipe Insulation for 1-5/8" Copper Tubing

This six-foot length of flexible NBR/PVC tube fits copper tubing with a 1-5/8 inch inside diameter and corresponds to a 1-1/4 inch pipe size. The unslit design requires cutting during installation but delivers a continuous thermal barrier for plumbing or HVAC lines. It arrives new and plenum rated for use in air-handling spaces.

Sustained Temperature Performance

The closed-cell foam structure maintains its insulating value across a continuous operating range from minus 297 degrees Fahrenheit up to 220 degrees Fahrenheit. An R-value of 4.8 indicates steady resistance to heat flow during long heating or cooling cycles rather than only during brief peaks. Flame spread and smoke developed indices of 77 and 102 respectively show consistent fire-behaviour characteristics under prolonged exposure.

Upgrade from Lower-Rated Wrap or Uninsulated Pipe

This tube replaces basic fiberglass wrap or bare copper where condensation control and stable thermal efficiency are required over the full 220-degree span. The jump is worthwhile when plenum rating and a closed-cell foam cell type are specified by code or design, while installers needing pre-slit or self-sealing formats will need a different product style.