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Black flexible tee-shaped elastomeric pipe fitting insulation with closed-cell foam structure

Nomaco Kflex

Nomaco Kflex 801-T-048158 1-5/8" x 1/2" elastomeric tee pipe fitting insulation

SKU CH-7G1W-MG4CH MPN 801-T-048158

Elastomeric tee insulation for 1-5/8" tubing with 1/2" wall, rated to 220 °F and R-3.1

  • TypeDrain Components
  • ColorBlack
  • Operates down to -297 °F for extreme cold protection
  • Withstands up to 220 °F continuous heat exposure
  • R-value 3.1 reduces thermal loss on piping
  • Flame spread index 25 meets plenum safety standards
  • Antimicrobial closed-cell foam resists mould and moisture

Tee fitting insulation for 1-5/8" tube

Nomaco Kflex 801-T-048158 is a black elastomeric tee fitting designed to insulate 1-5/8 inch outside-diameter tube at branch connections. The closed-cell Buna-N rubber/PVC foam suits HVAC, refrigeration and plumbing installers who need continuous thermal protection on copper or steel piping systems.

Plenum-rated with 3.1 R-value and 25 flame spread

The material carries a UL 94 listing and a flame spread index of 25, meeting plenum requirements for air-handling spaces. An R-value of 3.1 at 1/2 inch wall thickness provides the thermal resistance spec that determines whether this tee meets the project insulation code.

Antimicrobial closed-cell foam from -297 °F to 220

The flexible unslit tee withstands a continuous operating range of -297 °F to 220 °F without degrading. Closed-cell structure resists moisture ingress and microbial growth, so the insulation retains its thermal performance and fire rating under sustained low-temperature refrigeration or high-temperature heating cycles.

Highlights

  • Operates down to -297 °F for extreme cold protection
  • Withstands up to 220 °F continuous heat exposure
  • R-value 3.1 reduces thermal loss on piping
  • Flame spread index 25 meets plenum safety standards
  • Antimicrobial closed-cell foam resists mould and moisture

Specifications

TypeDrain Components
ColorBlack
BrandNomaco Kflex
Model801-T-048158

Questions about this item

What does the R-value 3.1 mean for heat retention on my 1-5/8" tube?

R-value 3.1 indicates the insulation's thermal resistance; on a 1-5/8" outside diameter tube it reduces heat loss or gain across the 1/2" wall thickness.

How does the UL 94 rating affect where I can install this tee fitting?

UL 94 compliance means the material meets flame-retardant requirements, and with a flame spread index of 25 it qualifies as plenum rated for use in air-handling spaces.

Will the unslit tee fit over my existing 1-1/4" pipe without cutting?

The tee is manufactured unslit with a 1-5/8" inside diameter for 1-1/4" pipe size; it must be slit on site to install over existing piping.

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