High-quality NBR insulation foam tube for HVAC, refrigeration, and plumbing. Closed-cell structure, anti-condensation, flexible, and fire-retardant. Ideal for pipe freeze protection and energy saving.

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Nitrile rubber insulation tubing

Specifications:

ItemPropertyUnitTypical ValueTest Standard
1Material-Nitrile Butadiene Rubber (NBR/PVC blend)-
2Cell Structure-Closed Cell FoamASTM D6226
3Apparent Densitykg/m³40 ~ 65ASTM C302
4Thermal Conductivity @23℃W/(m·K)≤0.034ASTM C518
5Continuous Service Temperature℃-40 ~ +105ASTM C534
6Water Vapour Diffusion Factor (μ)-≥7000ASTM E96
7Water AbsorptionVol%≤2.5ASTM C209
8Fire Performance-Class 0 / Class1 (BS476 Part6&7); Self-extinguishingBS 476
9Dimensional Stability (70℃, 7d)%≤ ±1.0ASTM C534
10Available Wall Thicknessmm6, 9,13,19,25,32-
11Inner Diameter Rangemm6 ~ 114-
12Standard Lengthm2-
13Environment Feature-CFC-free, HCFC-free, Asbestos-free, Low smoke toxicity-
14Copper Corrosion-Non-corrosive to copper pipeASTM C665


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Product Details

Nitrile Rubber (NBR) insulation tubing is a flexible, closed-cell foam insulation material specially formulated from high-quality nitrile butadiene rubber and PVC compound. Featuring excellent thermal insulation performance, superior flexibility, high-density closed-cell structure and low thermal conductivity, this insulation tube is widely applied in HVAC systems, central air conditioning pipes, chilled water pipelines, refrigeration equipment, heating systems and industrial piping insulation. It effectively prevents heat loss, avoids condensation dripping, reduces energy consumption and protects pipelines from corrosion and external damage.

Key Features

    • Excellent Thermal Insulation: Low thermal conductivity effectively blocks heat transfer, achieving outstanding heat preservation and anti-condensation effects for cold and hot water pipes.

    • Closed-cell Waterproof Structure: High closed-cell rate provides superb water vapor resistance and low water absorption, preventing moisture penetration and ensuring long-term stable insulation performance.

    • High Flexibility & Easy Installation: Soft and bendable material fits various pipe shapes perfectly, easy to cut and install, saves construction time and labor cost.

    • Fire Retardant & Self-extinguishing: Compliant with international fire safety standards, self-extinguishing, low smoke and non-flammable, no droplet combustion during burning.

    • Durable & Anti-aging: Excellent resistance to aging, ozone, temperature change and chemical corrosion, long service life without easy deformation or cracking.

    • Eco-friendly & Safe: CFC-free, HCFC-free, asbestos-free and non-toxic, harmless to human body and environment, meets global environmental protection requirements.

    • Copper Pipe Friendly: Non-corrosive to copper, iron and aluminum pipes, effectively protecting pipeline systems.

3. Technical Advantages

The NBR insulation tubing maintains stable thermal performance under long-term high and low temperature conditions. Its superior water vapor diffusion resistance avoids insulation failure caused by moisture accumulation. The product features uniform foam density, smooth surface, stable dimensional tolerance and no hollow holes, ensuring consistent and reliable insulation effects in long-term use.

4. Application Scope

  • HVAC air conditioning chilled water and hot water pipes

  • Refrigeration and cold storage pipeline systems

  • Industrial equipment heat preservation and anti-condensation protection

  • Building plumbing and ventilation pipeline insulation

  • Solar water heating pipeline systems

5. Customization Options

We support customized inner diameter, wall thickness and length. Optional upgrades include self-adhesive backing, aluminum foil facing and fire-resistant enhanced grade, to meet different engineering and environmental usage requirements.


Why Choose Us?

We supply high-quality NBR insulation foam tubes certified to ISO 9001 and RoHS standards. With stable production capacity and flexible customization options, we are your reliable partner. Whether for standard projects or special requirements, our technical team provides professional advice and quick response.

ItemPropertyUnitTypical ValueTest Standard
1Material-Nitrile Butadiene Rubber (NBR/PVC blend)-
2Cell Structure-Closed Cell FoamASTM D6226
3Apparent Densitykg/m³40 ~ 65ASTM C302
4Thermal Conductivity @23℃W/(m·K)≤0.034ASTM C518
5Continuous Service Temperature℃-40 ~ +105ASTM C534
6Water Vapour Diffusion Factor (μ)-≥7000ASTM E96
7Water AbsorptionVol%≤2.5ASTM C209
8Fire Performance-Class 0 / Class1 (BS476 Part6&7); Self-extinguishingBS 476
9Dimensional Stability (70℃, 7d)%≤ ±1.0ASTM C534
10Available Wall Thicknessmm6, 9,13,19,25,32-
11Inner Diameter Rangemm6 ~ 114-
12Standard Lengthm2-
13Environment Feature-CFC-free, HCFC-free, Asbestos-free, Low smoke toxicity-
14Copper Corrosion-Non-corrosive to copper pipeASTM C665




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