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Black flexible foam tube pipe insulation 6 ft length

Insul-Tube

Insul-Tube 6RX048058 Pipe Insulation 5/8 in ID 6 ft

SKU CH-G98Y-YTF4W

Closed-cell rubber/PVC tube insulation for 5/8 in copper pipe, rated from -297 °F to 220 °F with plenum-rated fire performance

  • Size3/8 in
  • Product typeTarps
  • Withstands extreme cold to -297 °F for reliable low-temp performance
  • Handles high heat up to 220 °F without degradation
  • Low flame spread index 68 meets strict fire-safety codes
  • Low smoke developed index 93 limits toxic emissions in fire
  • Closed-cell foam structure resists moisture and saves energy

Pipe Insulation for 5/8 in Copper Tube

This closed-cell NBR/PVC tube fits 5/8 in copper tube and 3/8 in pipe size. The unslit design requires on-site cutting for valves and fittings. It is suited for plumbing, HVAC and refrigeration runs that need flexible thermal protection.

Plenum-Rated with 220 °F Maximum Temperature

The insulation carries a plenum rating and operates from -297 °F up to 220 °F. Flame spread index is 68 and smoke developed index is 93. These fire-performance figures decide whether the product meets local mechanical-code requirements for air-handling spaces.

Unslit Tube Needs Cutting and Sealing

Installers must slit the 6 ft length, wrap it around the pipe and seal seams with compatible tape or adhesive. The 1/2 in wall thickness adds bulk in tight joist bays. Forgetting to seal joints is the common error that lets condensation form on cold lines.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 94% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameK-FLEX USA
Product typeTarps
Size & build
Size3/8 in

Questions about this item

What does an R-value of 3 mean once the tube is on a 5/8 in copper line?

An R-value of 3 indicates the insulation resists heat flow well enough for typical plumbing and HVAC runs, keeping fluid temperature stable along the 6 ft length.

How do the flame spread index of 68 and smoke developed index of 93 limit where this tube can be installed?

Those indices qualify the material as plenum rated, so it meets code for use in air-handling spaces without additional wrap.

What clearance is needed to slide the unslit tube over a 5/8 in copper tube?

The tube is flexible and unslit; it stretches enough to push over the 5/8 in copper tube by hand without tools.

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