We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green flexible foam pipe insulation tube with unslit wall

Nomaco Kflex

Nomaco Kflex 6RHFN068118 trap

SKU CH-4QFS-WY4AN MPN 6RHFN068118

Green halogen-free elastomeric pipe insulation tube rated for -40 °F to 250 °F with R-value 4.7 and plenum rating

  • TypeDrain Components
  • MaterialHAWA
  • ColorGreen
  • Halogen-free elastomeric insulation for safer indoor air quality
  • R-value 4.7 provides strong thermal resistance for energy savings
  • Operates from -40 °F to 250 °F for extreme-temperature reliability
  • Closed-cell foam structure resists moisture and condensation
  • Plenum-rated with flame spread 25 and smoke developed 50

3/4 in pipe insulation for copper tube size 1 in

This Nomaco Kflex tube is designed for 3/4 in pipe size and fits copper tube size 1 in. The closed-cell elastomeric foam provides an R-value of 4.7 and operates between -40 and 250 degrees F. It is plenum rated with a flame spread index of 25 and smoke developed index of 50. The green unfaced tube measures 6 ft in overall length.

Unslit flexible tube installs by sliding over pipe

The unslit design requires the tube to be slid over the pipe before connections are made, which can be difficult on assembled runs. Flexibility helps with bends, but the 3/4 in wall thickness adds bulk in tight spaces. Cutting the closed-cell foam cleanly requires a sharp knife to avoid tearing the material. No adhesive or facing is included, so separate tape or glue is needed to seal seams.

Verify pipe OD matches 1 1/8 in inside diameter

Confirm the pipe outer diameter matches the 1 1/8 in inside diameter of this insulation. Ensure the operating temperature range of -40 to 250 degrees F covers your system conditions. Check that plenum rating and the flame spread index of 25 meet local code requirements. The 6 ft length must suit the run without excessive joints.

Highlights

  • Halogen-free elastomeric insulation for safer indoor air quality
  • R-value 4.7 provides strong thermal resistance for energy savings
  • Operates from -40 °F to 250 °F for extreme-temperature reliability
  • Closed-cell foam structure resists moisture and condensation
  • Plenum-rated with flame spread 25 and smoke developed 50

Specifications

TypeDrain Components
MaterialHAWA
ColorGreen
BrandNomaco Kflex
Model6RHFN068118

Questions about this item

How can I confirm the pipe insulation is performing correctly after installation?

Check that the tube remains flexible and intact across the full six-foot length with no gaps, and that surface temperatures stay within the minus forty to two hundred fifty degrees Fahrenheit operating range.

What comes in the package and what must I purchase separately?

The box contains one six-foot green elastomeric insulation tube sized for three-quarter-inch pipe with a three-quarter-inch wall; adhesive, tape, or mechanical fasteners are not included and must be bought separately.

Which capacity or version should I select for a one-inch copper tube?

Choose the six-foot tube with a three-quarter-inch wall and one-and-one-eighth-inch inside diameter, rated at R four point seven, which matches the one-inch copper tube size listed in the specifications.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.