We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black flexible foam tube pipe insulation 6 ft long

Insul-Tube

Insul-Tube 6RX048158 Pipe Insulation 1-5/8" OD 6 ft NBR/PVC

SKU CH-7MDN-5HF6S

Closed-cell NBR/PVC tube insulates 1-5/8 in copper pipe at R-2.9 from -297 °F to 220 °F

  • Size1-1/4 in
  • Product typeTarps
  • Operates from -297 °F to 220 °F for extreme temperature stability
  • Closed-cell NBR/PVC foam gives R-value 2.9 thermal resistance
  • Plenum rated with flame spread 72 and smoke developed 97 for code compliance
  • Flexible unslit tube fits 1-5/8" copper and 1-1/4" pipe sizes
  • Six-foot length reduces joints for faster installation

Purpose and fit

This pipe insulation suits HVAC, refrigeration and industrial piping runs that require closed-cell thermal protection. It is built for copper tube sizes of 1-5/8 inches and corresponding pipe sizes of 1-1/4 inches.

Build integration

The unslit tube slides over pipe before joints are made, so plan the layout before final assembly. NBR/PVC foam handles temperatures from -297 to 220 degrees F and carries a plenum rating with flame spread index 72 and smoke developed index 97.

Upgrade context

The R-value of 2.9 improves on bare pipe or lower-grade wrap where condensation control and energy loss are concerns. It does not suit installations that demand a pre-slit design or adhesive facing for retrofit work.

How it compares

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

Price $6.99
Cheaper than about 91% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameK-FLEX USA
Product typeTarps
Size & build
Size1-1/4 in

Questions about this item

How much heat can the NBR/PVC tube withstand before it degrades?

The insulation is rated for a maximum operating temperature of 220 degrees Fahrenheit and a minimum of -297 degrees Fahrenheit, so it remains stable across that range.

Does the closed-cell foam stay flexible and quiet when installed in a plenum space all day?

Yes, the flexible closed-cell NBR/PVC material is plenum rated with a flame spread index of 72 and smoke developed index of 97, so it meets fire safety requirements for continuous use.

Will this 1-5/8 inch ID tube fit directly over my 1-1/4 inch copper pipe without extra fittings?

It is made for 1-5/8 inch copper tube size, which corresponds to 1-1/4 inch nominal pipe size, so it slides on without additional adapters.

More in General Hardware & Accessories

Similar items