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Tan fiberglass pipe insulation tube with slit adhesive flap, 3 ft length

Owens Corning

Owens Corning 147376 Pipe Insulation 3 ft 2 in Wall

SKU CH-N9F7-ZKEYX MPN 147376

Fiberglass pipe insulation with adhesive slit, ASJ facing and R-15.9 thermal resistance for 2½-inch pipe

  • TypeDrain Components
  • MaterialHAWA
  • ColorTan
  • R-value 15.9 cuts heat loss on 2-1/2 in pipes
  • ASJ facing with slit adhesive flap speeds installation
  • Fiberglass core withstands 0 to 1000 °F service range
  • Plenum-rated with flame spread 25 and smoke developed 50
  • Tan 3 ft tube fits 2 29/32 in ID piping

Pipe insulation for 2 1/2 in piping

This Owens Corning fiberglass tube fits 2 1/2 in pipes with a 2 in wall thickness. The 3 ft length comes slit with adhesive and flap for quick installation. It is suited for plumbing professionals and facility managers who need thermal protection on hot or cold lines.

Verify pipe size and temperature range

Confirm the pipe outside diameter matches the 2 29/32 in inside diameter before ordering. The insulation operates from 0 to 1,000 Degrees F, so ensure the service temperature stays within that window. Check that the ASJ facing and plenum rating satisfy local code requirements for the installation area.

Fiberglass tube with ASJ facing and adhesive closure

The tan fiberglass core delivers an R Value of 15.9 while the ASJ facing provides a flame spread index of 25 and smoke developed index of 50. The slit design with adhesive flap allows the tube to wrap around existing pipe without disassembly. The plenum-rated construction meets fire and smoke standards for air-handling spaces.

Highlights

  • R-value 15.9 cuts heat loss on 2-1/2 in pipes
  • ASJ facing with slit adhesive flap speeds installation
  • Fiberglass core withstands 0 to 1000 °F service range
  • Plenum-rated with flame spread 25 and smoke developed 50
  • Tan 3 ft tube fits 2 29/32 in ID piping

Specifications

TypeDrain Components
MaterialHAWA
ColorTan
BrandOwens Corning
Model147376

Questions about this item

What comes in the box and is any extra adhesive or tape needed for the slit-and-flap installation?

The package contains one 3 ft fiberglass pipe insulation tube with ASJ facing and a pre-applied adhesive flap; no separate adhesive or tape is required.

Which length and wall thickness should I select for a 2 1/2 in pipe needing R-15.9 performance?

Choose the 3 ft length with 2 in wall thickness — it matches the 2 29/32 in inside diameter and delivers the stated R-value of 15.9.

How does the R-15.9 rating perform when the line runs through a plenum space at up to 1,000 °F?

The insulation is plenum rated with a flame spread index of 25 and smoke developed index of 50, so it meets code for plenum use while maintaining R-15.9 up to the 1,000 °F maximum operating temperature.

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