Nomaco Kflex 6RX048418 trap
Fits 3-1/2 inch pipe with 1/2 inch wall NBR/PVC elastomeric insulation operating from -297 to 220 degrees F and R-value 2.8
- Product typeDrain Components
- Main materialHAWA
- Product colorBlack
- Handles extreme cold with -297 °F rating
- Withstands high heat up to 220 °F
- Delivers R-value 2.8 for thermal efficiency
- NBR/PVC elastomeric material resists moisture and wear
- Fits 3-1/2 in pipe and 4-1/8 in tube sizes
Pipe insulation for 3-1/2 in pipe
This 6 ft length of NBR/PVC elastomeric insulation fits 3-1/2 in pipe and 4-1/8 in tube. The unslit design has a 1/2 in wall and a nominal inside diameter of 4-1/8 in. It operates from -297 to 220 degrees F with an approximate R value of 2.8. The black finish suits plumbing and HVAC runs.
Suited for standard pipe runs.
Installers insulating straight lengths of 3-1/2 in pipe or 4-1/8 in tube will find this length convenient. Buyers who require a pre-slit tube for quick wrap-around installation should look at alternative styles. The unslit body also means it is not intended for retrofit over existing fittings without cutting.
1/2 in wall thickness gives R 2.8
The single figure that decides fit and thermal performance is the 1/2 in wall thickness, which yields an approximate R value of 2.8. This determines whether the insulation meets the project’s heat-loss or condensation-control requirements.
How it compares
Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.
- Price $12.99
- Cheaper than about 78% of the 4,240 comparable items (median $31.99).
Specifications
| Product | |
|---|---|
| Brand name | Nomaco Kflex |
| Model name | 6RX048418 |
| Product type | Drain Components |
| Product color | Black |
| Size & build | |
| Main material | HAWA |
Questions about this item
How do I install the 6 ft unslit pipe insulation on a 3-1/2" pipe, and what step is often missed?
Slip the 1/2" wall insulation over the pipe before final connections, then seal the seam with compatible adhesive tape; the step often missed is taping the joint to prevent condensation ingress.
What maintenance or replacement will the NBR/PVC elastomeric insulation need over time?
Inspect annually for UV damage, compression, or tears; replace any sections that have lost flexibility or show surface cracking to maintain the R-value of 2.8.
At what temperature limit does the insulation performance degrade first under sustained use?
Continuous exposure near the upper limit of 220 °F will accelerate ageing of the NBR/PVC material before the lower limit of -297 °F becomes a concern.
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