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Green flexible foam tube insulation with unfaced surface

Nomaco Kflex

Nomaco Kflex 6RHFN068078 1/2" pipe insulation trap 3/4" wall

SKU CH-0QTK-TETWR MPN 6RHFN068078

Closed-cell elastomeric tube insulates 1/2 in copper pipe with R-5.3 thermal resistance and plenum-rated fire performance

  • TypeDrain Components
  • MaterialHAWA
  • ColorGreen
  • Halogen-free elastomeric material reduces environmental impact
  • Closed-cell foam structure delivers R-5.3 thermal resistance
  • Operates from -297 °F to 250 °F for extreme conditions
  • Plenum-rated with flame spread 127 and smoke developed 152
  • Flexible unslit tube fits 1/2 in copper pipe with 3/4 in wall

1/2" pipe insulation for copper tube

This Nomaco Kflex tube fits 1/2 inch copper pipe with a 7/8 inch inside diameter. It comes as a 6 foot length of green elastomeric foam. The material is halogen-free and rated for plenum use. Builders insulating refrigerant or hydronic lines in commercial or residential systems will find it suitable.

3/4 inch wall thickness delivers R-5.3

The single figure that decides fit and thermal performance is the 3/4 inch wall. It provides an R-value of 5.3 for the listed pipe size. Select this insulation only when the design calls for that exact wall thickness on 1/2 inch copper tube.

Operating range from -297 to 250 °F

The closed-cell Buna-N rubber stays flexible across a wide temperature span. It carries a flame spread index of 127 and a smoke developed index of 152. The unfaced tube resists moisture ingress and maintains its insulating value in normal service.

Highlights

  • Halogen-free elastomeric material reduces environmental impact
  • Closed-cell foam structure delivers R-5.3 thermal resistance
  • Operates from -297 °F to 250 °F for extreme conditions
  • Plenum-rated with flame spread 127 and smoke developed 152
  • Flexible unslit tube fits 1/2 in copper pipe with 3/4 in wall

Specifications

TypeDrain Components
MaterialHAWA
ColorGreen
BrandNomaco Kflex
Model6RHFN068078

Questions about this item

What does the R-value of 5.3 mean for a 1/2-inch copper pipe in a real installation?

It indicates the thermal resistance of the 3/4-inch wall thickness, reducing heat loss or gain on the 7/8-inch OD tubing over the 6-foot length.

How does the plenum rating affect where this insulation can be used?

The plenum rating means it meets flame spread 127 and smoke developed 152 requirements for installation in air-handling spaces.

What clearance is needed to fit the unslit tube onto a 1/2-inch copper pipe?

The tube has a 7/8-inch inside diameter and 3/4-inch wall, so it slides over the pipe without slitting and requires enough space for the resulting 2-3/8-inch outer diameter.

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