Nomaco Kflex 6RHFN068400 Drain Trap
Halogen-free elastomeric pipe insulation tube rated for -297 °F to 250 °F with R-3.2 thermal resistance and plenum-rated fire performance
- Product typeDrain Components
- Product colorGreen
- Halogen-free elastomeric material for safer installations
- Closed-cell foam structure delivers R-value 3.2 thermal resistance
- Plenum-rated with flame spread 137 and smoke developed 162
- Flexible unslit tube fits 3-1/2 in pipe with 3/4 in wall
- Operates from -297 °F to 250 °F for extreme conditions
Pipe insulation for copper tube size 4 1/8 in
This Nomaco Kflex tube suits 3-1/2 in pipe with a 4 in inside diameter and 3/4 in wall. Closed-cell Buna-N rubber gives an R value of 3.2 across a 6 ft length. The material is halogen-free, flexible and rated for plenum spaces. It arrives unslit in a green finish.
Replaces worn or missing wrap on hot and cold lines
Upgrade when existing cover is cracked, water-logged or no longer meets a flame spread index of 137 and smoke developed index of 162. The jump is worth it if the system runs between -297 °F and 250 °F and needs continuous thermal performance without gaps.
Verify the pipe outer diameter matches 3-1/2
Confirm the run can accept an unslit tube that must slide on from an end. Check that local code accepts the listed fire indices and that the operating range covers the coldest and hottest fluid temperatures in the circuit.
How it compares
Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.
- Price $55.99
- Pricier than about 65% of the 4,240 comparable items (median $31.99).
Specifications
| Product | |
|---|---|
| Brand name | Nomaco Kflex |
| Model name | 6RHFN068400 |
| Product type | Drain Components |
| Product color | Green |
Questions about this item
What pipe size and wall thickness does the 6RHFN068400 tube fit?
The tube is sized for a 3-1/2 in pipe with a 3/4 in wall thickness.
How is the unslit insulation installed, and what step is often missed?
Slide the tube over the pipe before making connections, then seal the lengthwise seam with compatible tape or adhesive.
Will the Buna-N rubber insulation degrade or need replacement under normal use?
The closed-cell elastomer resists moisture and operates from -297 °F to 250 °F, so it does not require scheduled replacement.
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