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Black rectangular elastomeric insulation sheet, 36 by 48 inches

K-Flex Usa

K-Flex Usa 36" x 48" Elastomeric Insulation Sheet 1/2" Wall 4048

SKU CH-106T-3RTWV

NBR/PVC elastomeric insulation sheet measuring 36 by 48 inches with a 1/2 inch wall thickness

  • Elastomeric NBR/PVC blend resists moisture and temperature swings
  • 36 by 48 inch sheet covers large duct or pipe runs
  • Half inch wall thickness provides consistent thermal barrier
  • Black finish suits indoor, outdoor and underground installations
  • Industrial grade material handles iron, PVC and CPVC piping

Industrial elastomeric insulation sheet

This K-Flex USA sheet is a black NBR/PVC based elastomeric material supplied in a 36 by 48 format with a half inch wall. It serves as thermal insulation for iron, PVC or CPVC piping across indoor, outdoor and underground installations. The product is new and identified by the reference 4048. It addresses the need for flexible, closed-cell pipe covering in commercial and industrial plumbing work.

Thermal behaviour in normal service

The elastomeric structure provides low thermal conductivity to limit heat loss or gain on the pipework it surrounds. Its closed-cell composition resists moisture ingress, helping to maintain insulation performance over time in typical ambient conditions. The black finish suits exposed runs where UV resistance is required. The material remains flexible during routine temperature cycling without cracking.

Sustained load performance

Under continuous operating temperatures the sheet retains its insulating properties and dimensional stability without degradation. The NBR/PVC blend resists compression set, so the half inch wall thickness is maintained on long pipe runs. It does not satisfy requirements for fire-rated assemblies or high-temperature steam lines beyond the material's rated range. Buyers needing thicker walls or different facing options must source alternative products.

Highlights

  • Elastomeric NBR/PVC blend resists moisture and temperature swings
  • 36 by 48 inch sheet covers large duct or pipe runs
  • Half inch wall thickness provides consistent thermal barrier
  • Black finish suits indoor, outdoor and underground installations
  • Industrial grade material handles iron, PVC and CPVC piping

Specifications

BrandK-FLEX USA

Questions about this item

How do I install the 36" x 48" elastomeric sheet on a pipe, and what step is often missed?

Cut the sheet to wrap the pipe, apply compatible contact adhesive to both the insulation and pipe surface, then press firmly; the step often missed is sealing every seam and butt joint with the same adhesive to prevent moisture ingress.

What maintenance or replacement will the NBR/PVC based elastomeric insulation need later?

Inspect annually for UV degradation, physical tears, or adhesive failure; replace any sections that have become brittle, cracked, or water-logged, as the material cannot be repaired once the closed-cell structure is compromised.

What temperature limit appears first under sustained use on the 1/2" wall sheet?

Continuous service above the material's maximum rated temperature causes the elastomer to harden and lose flexibility, which is the first performance limit reached during prolonged high-heat exposure.

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