Insul-Tube
Insul-Tube 6RX048158 Pipe Insulation 1-5/8" OD 6 ft NBR/PVC
Closed-cell NBR/PVC tube insulates 1-5/8 in copper pipe at R-2.9 from -297 °F to 220 °F
- TypeTarps
- Size1-1/4"
- 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.
Highlights
- 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
Specifications
| Brand | K-FLEX USA |
|---|---|
| Type | Tarps |
| Size | 1-1/4" |
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.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
