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Black flexible 90-degree elbow pipe insulation 7/8 in ID 1/2 in wall

K-Flex Usa

K-Flex Usa 801-LRE-048078 90-degree elbow pipe fitting 7/8 in ID 1/2 in wall

SKU CH-5ESH-07N9Z

7/8 in ID, 1/2 in wall, 90-degree elbow pipe fitting with 3.1 R-value insulation rated from -297 to 220 °F

  • 90-degree elbow routes insulation around tight pipe bends
  • Closed-cell Buna-N/PVC foam resists moisture and microbial growth
  • Operates from -297 °F to 220 °F for extreme-temperature systems
  • Plenum-rated with flame-spread index 25 meets fire-code requirements
  • R-value 3.1 wall thickness 1/2 in reduces thermal loss

K-Flex USA 90-degree elbow fitting

The K-Flex USA 801-LRE-048078 is a 90-degree elbow pipe fitting made from Buna-N rubber and PVC elastomeric insulation. It fits a 7/8 in inside diameter with a 1/2 in wall thickness for 1/2 in pipe sizes. The unslit design suits new plumbing and HVAC installations requiring a tight directional change.

Sustained temperature and fire performance

The closed-cell foam operates continuously from -297 °F to 220 °F without degrading. An R-value of 3.1 provides steady thermal resistance under long-term load. The material carries a flame spread index of 25 and a plenum rating, meeting fire safety requirements for extended service in air-handling spaces.

Replaces straight-run insulation at directional

This elbow replaces field-fabricated mitre joints on 1/2 in piping where a 90-degree turn occurs. The pre-formed shape eliminates gaps that reduce thermal efficiency and invite condensation. The jump is worth it when antimicrobial, flame-retardant performance and plenum compliance are specified for the system.

Highlights

  • 90-degree elbow routes insulation around tight pipe bends
  • Closed-cell Buna-N/PVC foam resists moisture and microbial growth
  • Operates from -297 °F to 220 °F for extreme-temperature systems
  • Plenum-rated with flame-spread index 25 meets fire-code requirements
  • R-value 3.1 wall thickness 1/2 in reduces thermal loss

Specifications

BrandK-FLEX USA

Questions about this item

Does the Buna-N rubber/PVC insulation stay flexible after running at 220 °F all day?

The material is rated for continuous use up to 220 °F and remains flexible across its full temperature range.

What pipe size must I already have for this 90-degree elbow to fit?

It is designed for 1/2 in pipe with a 7/8 in outside diameter.

Will the 3.1 R-value and plenum rating meet code when I add it to my existing insulated copper lines?

Yes, the fitting provides R-3.1, carries a 25 flame-spread index and is plenum rated for use alongside existing insulated runs.

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