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Black flexible elastomeric 90-degree elbow pipe insulation

Nomaco Kflex

Nomaco Kflex 801-LRE-048158 1-5/8" x 7/8" Elastomeric Elbow Pipe Fitting hardware

SKU CH-KPEY-2CSFX

Elastomeric 90-degree elbow pipe-fitting insulation with a 3.1 R-value, antimicrobial and flame-retardant closed-cell foam rated from -297 °F to 220 °F

  • TypeTarps
  • Flame spread index 25 meets strict fire safety codes
  • Operates from -297 °F to 220 °F for extreme temperature stability
  • R-value 3.1 delivers effective thermal insulation performance
  • Antimicrobial closed-cell foam resists mould and moisture
  • 90-degree elbow fits 1-5/8 in tube for direct installation

Elastomeric Elbow Pipe Fitting

The Nomaco Kflex 801-LRE-048158 is a 90-degree elbow pipe fitting made from Buna-N rubber and PVC. It provides thermal insulation for piping systems with a closed-cell foam structure. The fitting is plenum rated and offers antimicrobial and flame-retardant resistance properties. It suits commercial and industrial installations requiring flexible insulation at elbows.

Compatibility Check Before Ordering

Verify the pipe outside diameter matches 1-5/8 inches and the pipe size is 1-1/4 inches for correct fit. Confirm the unslit installation style suits your assembly process and access constraints. Ensure the operating temperature range between -297 and 220 degrees Fahrenheit covers your system requirements. Check that the flame spread index of 25 meets local code requirements.

Ideal For Insulation Professionals

This fitting suits installers needing flexible, plenum-rated insulation with antimicrobial protection for standard pipe sizes. It is not for systems requiring a slit installation style for retrofit without disassembly. Buyers needing a different wall thickness or inside diameter should look at other options. It does not suit applications exceeding the stated temperature limits.

Highlights

  • Flame spread index 25 meets strict fire safety codes
  • Operates from -297 °F to 220 °F for extreme temperature stability
  • R-value 3.1 delivers effective thermal insulation performance
  • Antimicrobial closed-cell foam resists mould and moisture
  • 90-degree elbow fits 1-5/8 in tube for direct installation

Specifications

BrandK-FLEX USA
TypeTarps

Questions about this item

Does the Nomaco Kflex 801-LRE-048158 elbow come pre-slit or with adhesive, and what extra items are needed for installation?

The fitting is unslit and has no factory-applied adhesive; you will need a compatible insulation adhesive and vapour-barrier tape to seal the joints after fitting it over the 1-5/8 in tube.

Which wall-thickness version of the 1-5/8 in elbow should I choose for a plenum-rated run?

This model has a 1/2 in wall thickness, an R-value of 3.1 and a plenum rating, so it meets the thermal and fire-code requirements for plenum spaces in a single product.

What does the 25 flame-spread index mean once the elbow is installed in a live system?

A flame-spread index of 25 indicates low surface-flame propagation, allowing the insulation to comply with typical building-code limits for plenum and exposed installations.

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