Nomaco Kflex 6RX048358

Nomaco Kflex

Pipe Insulation, Unslit, ID 3 5/8 In

6RX048358 390211
Average Rating: 5
Read Reviews (1) Write a Review
$20.26+ 6 Business Day Shipping $8.45

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Pipe Insulation, Unslit, ID 3 5/8 In


ItemPipe Insulation
Insulation Nominal I.D.3-5/8"
Copper Tube Size (Nom. I.D. Plumbing)3-1/2"
Copper Tube Size (O.D. HVAC/R)3-5/8"
Iron Pipe Nominal Size3"
Wall Thickness1/2"
Temp. Range-297 to 220 Degrees F
Approx. ''R'' Factor2.8
Material of ConstructionElastomeric
Green Environmental AttributeProduct Contributes To Reducing Energy Consumption
Green Certification or Other RecognitionGREENGUARD Certified
Weight 2.200000


Pipe Insulation, Unslit, Insulation Nominal I.D. 3-5/8 In, Copper Tube Size (Nom. I.D. Plumbing) 3-1/2 In, Copper Tube Size (O.D. HVAC/R) 3-5/8 In, Iron Pipe Size Nominal 3 In, Length 6 ft., Temp. Range -297 to 220 Degrees F, Color Black

  • California Proposition 65 Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.

  • Pipe Insulation
  • Unslit tubing can be slit lengthwise and fit over existing pipes. Seal with 3F417 contact adhesive, see page 4303.
  • Elastomeric material retards heat loss, prevents condensation, and provides effective moisture vapor resistance. Environmentally friendly and CFC-free. Mold- and mildew-resistant, fiber-free, and nondusting. Can be used in underground applications above the water table. Seal before back-filling.
  • Meet ASTM C 411, C 534 Type 1, D 1056-00-2B1, and E 84 2" 25/50 test11ed according to UL 723 and NFPA 255. CAN/ULC S102-M88, FMRC 2006 Approval Guide Chapter 14, NFPA 90A Sect. 2.3.3, and FM Approved. Meet UL 94-5V Flammability Classification (Recognition E300774) and UL 181 Sections 11.0 and 16.0.
  • 6-ft. lengths
  • Temp. range: -297 to 220 F MIL-P-15280, for tubing
  • Flexible Elastomeric (Rubber) Closed-Cell Pipe and Fitting Insulation

Customer Reviews

Average Product Rating: 5
based on 1 reviews

Good duct insulation

Monday, May 09, 2011

Material is easily handled. It is not rigid and collapses on itself for storage. They ship it in box longer than 6', but the product could easily be folded to save a considerable amount on their shipping cost (customer's shipping cost was free at time of my purchase, so this is Drillspot's loss that they do not seem to pass onto customer because they offer the material at a very competitive price). We're using it as duct insulation on a forced air diesel heater in our boat. The ducting was already installed, so we needed to slit this material, wrap it around the duct, and tape it closed. We used the 3M 3903 Duct Tape to seal the seam, which worked great. It was a straight forward job. The material was not too smelly, and clean-up was non-existant. The material outgases slightly on first use to a high temperature - it wasn't stinky, it just seemed a little smokey in the area. After that first outgassing, the material seems stable and non-smelly. Before we installed this material, the ducting was so hot you could not touch it. Now that it is insulated, you can lay your hand on the insulation and it feels slightly warm. Definitely does the job. In our application, the ducting reaches ~240F near heater, and this material is rated to only 220F. We did some rough tests and discovered the material seems OK at the higher temperature - it does not smoke or burn. When we reached around 350F in the test, the material got "cripsy" but still no combustion or melting. Still hesistant to use long term at a temp higher than rated - but this is our problem, not the product's fault. We didn't realize the ducting would get that hot once insulated.

Easy to use, effective insulation, closed cell so will not absorb moisture and get moldy

Ship in more suitable sized container, a 6' piece could easy folded to fit in a 1-2' box.

Submitted by Rainshadow
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