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Black flexible tee-shaped pipe fitting insulation, closed-cell foam, unslit, 1/2 inch wall thickness

Nomaco Kflex

Nomaco Kflex 1/2" Thick NBR/PVC Tee Pipe Fitting Insulation, 3.20 R Value, Black

SKU CH-N7XS-S3FGD

Insulates 3/8 in pipe tees with 1/2 in thick closed-cell NBR/PVC foam rated R 3.20 and UL 94 flame spread 25 from -297 to 220 °F

  • TypeTarps
  • 1/2 in wall thickness delivers R-3.20 thermal resistance
  • Closed-cell NBR/PVC foam resists moisture and microbial growth
  • Withstands -297 °F to 220 °F for extreme-temperature piping
  • UL 94 listed with flame spread index 25 for plenum-rated safety
  • Pre-formed tee fits 5/8 in OD tubing without cutting

Tee fitting insulation for 3/8 in pipe

This unslit tee fitting is made from Buna-N rubber blended with PVC and sized for a 5/8 in outside diameter pipe. The closed-cell foam carries a 3.2 R-value and remains flexible across a temperature range from -297 °F to 220 °F. It is intended for mechanical and plumbing contractors who need reliable thermal protection on tee junctions.

Fits directly onto 3/8 in pipe tees without slitting

The unslit design slides over the fitting during assembly, eliminating the need for cutting and taping on site. Its plenum rating and flame spread index of 25 allow installation in air-handling spaces where building codes restrict materials. The antimicrobial, flame-retardant foam resists microbial growth while meeting UL 94 requirements.

Antimicrobial closed-cell foam with plenum rating

The factory-applied antimicrobial treatment inhibits mould and bacteria on the insulation surface. Combined with the flame-retardant formulation and UL 94 compliance, the material satisfies plenum-space regulations without additional wraps or coatings. Black colour provides a uniform appearance in exposed installations.

Highlights

  • 1/2 in wall thickness delivers R-3.20 thermal resistance
  • Closed-cell NBR/PVC foam resists moisture and microbial growth
  • Withstands -297 °F to 220 °F for extreme-temperature piping
  • UL 94 listed with flame spread index 25 for plenum-rated safety
  • Pre-formed tee fits 5/8 in OD tubing without cutting

Specifications

BrandK-FLEX USA
TypeTarps

Questions about this item

What is the maximum temperature the Kflex tee insulation can withstand before it degrades?

The insulation is rated for a maximum operating temperature of 220 Degrees F.

How much heat does the 1/2 inch thick NBR/PVC material radiate when installed in a plenum space?

It carries a Flame Spread Index of 25 and meets UL 94 standards for plenum-rated installations.

Which pipe size does this tee fitting cover without needing extra tape or adhesive?

It fits a 3/8 inch pipe size with a 5/8 inch outside diameter and unslit installation style.

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