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 halogen-free NBR insulation sheet 36 by 48 inches half inch thick

Nomaco Kflex

Nomaco Kflex 6RSHF3X4048 trap

SKU CH-Y7R7-QH0S1 MPN 6RSHF3X4048

Halogen-free NBR elastomeric insulation sheet, 36 by 48 inches, 1/2 inch thick, rated to 250 °F and plenum compliant

  • TypeDrain Components
  • MaterialHAWA
  • ColorGreen
  • Halogen-free NBR insulation meets strict fire-safety standards
  • Flame spread index 25 and smoke developed index 50 support plenum-rated installations
  • Operates from -297 °F to 250 °F for extreme-temperature resilience
  • Closed-cell foam structure delivers consistent thermal resistance
  • Flexible 36 in × 48 in sheet simplifies custom fabrication

Halogen-Free NBR Insulation Sheet

This Nomaco Kflex sheet is a halogen-free NBR elastomeric insulation product supplied in a 36 in by 48 in size with a 1/2 in thickness. It carries a plenum rating and meets IMO and SOLAS standards for fire safety. The material operates from -297 °F up to 250 °F and has a flame spread index of 25 with a smoke developed index of 50. Its closed-cell foam structure provides an R-value of 2.

HVAC and Marine Installers Seeking Low-Smoke

The sheet suits contractors who need plenum-rated, halogen-free insulation for ductwork or piping in commercial buildings or marine environments. The green unfaced finish and flexible form allow straightforward cutting and fitting on site. Buyers who require a higher R-value per inch or a factory-applied vapor barrier should look at alternative products. Installers needing self-adhesive backing will not find it on this item.

1/2 Inch Thickness With R-Value 2

The 1/2 in thickness delivers a thermal resistance of R-2, which determines whether the sheet meets the energy code or condensation control target for a given pipe or duct size. This single figure decides if the product fits the specification or if a thicker grade is required.

Highlights

  • Halogen-free NBR insulation meets strict fire-safety standards
  • Flame spread index 25 and smoke developed index 50 support plenum-rated installations
  • Operates from -297 °F to 250 °F for extreme-temperature resilience
  • Closed-cell foam structure delivers consistent thermal resistance
  • Flexible 36 in × 48 in sheet simplifies custom fabrication

Specifications

TypeDrain Components
MaterialHAWA
ColorGreen
BrandNomaco Kflex
Model6RSHF3X4048

Questions about this item

Does the 6RSHF3X4048 halogen-free NBR sheet arrive as a single 36 in x 48 in piece or must I order multiple sheets?

The product is supplied as one 36 in by 48 in sheet with a 1/2 in thickness, ready to cut to size.

When should I choose the 1/2 in thickness versus a different thickness for pipe insulation?

Select the 1/2 in thickness when the design calls for an R-value of 2 and the operating range stays between -297 °F and 250 °F.

What does the R-value 2 mean once the sheet is installed on a chilled-water pipe?

It provides a thermal resistance of 2, limiting heat gain while the closed-cell foam resists condensation at the stated temperature limits.

Also in this aisle

People compared these

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