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Green flexible foam pipe insulation tube, unslit, 6 ft length

Nomaco Kflex

Nomaco Kflex 6RHFN068238 trap

SKU CH-9GT4-KVBAE MPN 6RHFN068238

Halogen-free elastomeric pipe insulation tube, 6 ft length, R-value 4.2, plenum rated with flame spread 25 and smoke developed 50, operating from -40 to 250 °F

  • Product typeDrain Components
  • Main materialHAWA
  • Product colorGreen
  • Operates reliably from -40 °F to 250 °F
  • Closed-cell Buna-N rubber resists moisture ingress
  • Plenum rated with flame spread 25 and smoke developed 50
  • R-value 4.2 delivers strong thermal resistance
  • Halogen-free elastomeric material in green colour

Pipe insulation tube for 2 inch pipes

This Nomaco Kflex tube provides thermal protection for pipes with a 2 3/8 inch outside diameter. The 3/4 inch wall thickness creates an R-value of 4.2 for effective temperature control. Made from halogen-free Buna-N rubber, it operates reliably between -40 and 250 degrees Fahrenheit. The unslit tube design suits new installations where the pipe end is accessible.

Suits plenum spaces and high-temperature lines

The plenum rating and low flame spread index of 25 with smoke developed index of 50 meet commercial building requirements. The closed-cell foam structure resists moisture absorption on chilled water or refrigeration lines. Installers needing a pre-slit product for retrofit work on existing piping should look at alternative designs. The fixed 6-foot length also requires cutting for shorter runs.

2 3/8 inch inside diameter matches 2 inch pipe size

This specific dimension ensures proper fit on standard 2 inch nominal pipe with 2 3/8 inch outside diameter. The unslit installation style means the tube must slide over the pipe end during assembly. Verifying the pipe outside diameter against this 2 3/8 inch figure is the single check that confirms compatibility.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 60% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameNomaco Kflex
Model name6RHFN068238
Product typeDrain Components
Product colorGreen
Size & build
Main materialHAWA

Questions about this item

How do I install the 6 ft unslit insulation tube on a 2 in pipe, and what step is often missed?

Slide the unslit tube over the pipe before making final connections, then seal the seam with compatible adhesive tape; skipping the tape leaves gaps that reduce the R 4.2 value.

What maintenance or replacement will the HAWA Buna-N rubber insulation need over time?

Inspect annually for tears, UV damage or compression; replace any section where the 3/4 in wall thickness has flattened or the green jacket is cracked.

At what temperature limit does the insulation first degrade during sustained use?

Continuous exposure above 250 Degrees F exceeds the maximum operating temperature and will cause the closed-cell foam to break down.

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