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Black NBR/PVC pipe insulation, 6 ft length, unslit tubular form

Nomaco Kflex

Nomaco Kflex 6RX068318 Trap 3-1/8" x 6 ft 3/4" Wall

SKU CH-QDDG-PJF9Y MPN 6RX068318

NBR/PVC elastomeric pipe insulation fits 3-1/8" tubes with 3/4" wall thickness and operates from -297°F to 220°F

  • TypeDrain Components
  • MaterialHAWA
  • ColorBlack
  • Wide temperature resilience from -297 °F to 220 °F
  • NBR/PVC elastomeric material resists moisture and condensation
  • R-value 4.1 delivers effective thermal insulation
  • Six-foot length covers extended pipe runs
  • Fits 3-1/8 inch tube size for secure installation

Pipe insulation for 3-1/8" tubes

This unslit pipe insulation fits tubes with a 3-1/8 inch nominal inside diameter. The NBR/PVC based elastomeric material provides thermal protection across a temperature range of -297 to 220 degrees Fahrenheit. It comes in a six-foot length with a 3/4 inch wall thickness and carries an approximate R-value of 4.1.

Suitable applications and limitations

This product suits plumbing and HVAC lines requiring freeze protection or condensation control on 3-1/8 inch tubing. It is not for installers who need pre-slit insulation with self-sealing laps for faster application. Buyers requiring different wall thicknesses, tube sizes or longer continuous rolls must select other variants.

Critical sizing specification

The nominal inside diameter of 3-1/8 inches is the single specification that determines compatibility with the target piping. Verify the tube outer diameter matches this insulation ID before purchase to ensure proper fit and thermal performance.

Highlights

  • Wide temperature resilience from -297 °F to 220 °F
  • NBR/PVC elastomeric material resists moisture and condensation
  • R-value 4.1 delivers effective thermal insulation
  • Six-foot length covers extended pipe runs
  • Fits 3-1/8 inch tube size for secure installation

Specifications

TypeDrain Components
MaterialHAWA
ColorBlack
BrandNomaco Kflex
Model6RX068318

Questions about this item

What is the lowest temperature the 3/4" wall HAWA insulation can withstand before it fails?

The NBR/PVC elastomeric material is rated for continuous use down to -297 °F, so it remains flexible and effective in extreme cold.

How hot does the pipe surface get when the insulation runs at its 220 °F upper limit all day?

With an R-value of 4.1 the 3/4" wall keeps the outer surface much cooler than the 220 °F fluid inside, reducing burn risk and heat loss.

Which pipe size must I already have for the 3-1/8" nominal I.D. to fit correctly?

The insulation is sized for 3-1/8" outside-diameter tubing, so you need copper, steel or PEX pipe with that exact OD.

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