China Kingflex rubber foam insulation tube Factory, Pricelist

Kingflex rubber foam insulation tube has better heat-preservation effectiveness than PE material. Because of its best heat insulation property, they are widely used in chilled-water pipes, water pipes, air ducts of family air-conditioner, house-use fission air-conditioning and its joint pipes; side board, cover and bottom board and back board; hot-water pipes of building inner fitment, etc.
  • nominal wall thicknesses of 1/4”, 3/8″, 1/2″, 3/4″,1″, 1-1/4”, 1-1/2″ and 2” (6, 9, 13, 19, 25 , 32, 40 and 50mm)
  • Standard Length with 6ft (1.83m) or 6.2ft(2m).

Product Description

Technical Data
Property Unit Value Test Method
Temperature range °C -50 to 110 GB/T 17794-1999
Density range Kg/m³ 45-65 ASTM D1667
Water vapor permeability Kg/(m.s.pa) ≤0.91×10⁻¹³ DIN 52 615 / BS 4370 Part 2 1973
μ - ≥10000 -
Thermal Conductivity W/(m.k) ≤0.030 (-20°C)
≤0.032 (0°C)
≤0.036 (40°C)
ASTM C 518
Fire Rating - Class 0 & Class 1 BS 476 Part 6 & Part 7
Flame Spread and Smoke Developed Index - 25/50 ASTM E 84
Oxygen Index - ≥36 GB/T 2406, ISO4589
Water Absorption, % by Volume % 20% ASTM C 209
Dimension Stability - ≤5 ASTM C534
Fungi resistance - Good ASTM 21
Ozone resistance - Good GB/T 7762-1987
Resistance to U.V. and weather - Good ASTM G23
Key Performance Advantages
Technical characteristics
  • Excellent fire-resistance performance & Sound absorption: High safety rating ensures top-tier flame retardancy and noise dampening.
  • Low thermal conductivity (K-Value): Delivers exceptional insulation performance to reduce heat transfer.
  • Good moisture resistance: Protects against moisture accumulation and keeps structural integrity.
  • Environmentally friendly: Manufactured without harmful chemicals, safe for green building standards.
  • Easy to install & Nice appearance: Highly flexible for quick, clean aesthetics on any pipeline configuration.
Product Structural Benefits
  • Closed-cell structure provides excellent condensation and energy-loss control.
  • Effectively retards degradation due to ultraviolet (UV) radiation.
  • Flexible material with dusted, relaxed ID’s for easy installation.
  • Superior toughness to withstand demanding on-site handling.
  • Built-in vapor barrier eliminates the need for an additional vapor retarder.
  • Complete size range available for HVAC/R applications.
  • Distinguish between different pipelines effortlessly during project layout.
Insulation structure details
Product Showcase
Frequently Asked Questions
What is the operating temperature range of this elastomeric foam insulation?
This material operates safely and effectively within a temperature range of -50°C to 110°C, tested in compliance with GB/T 17794-1999 standards.
What are the fire resistance ratings of this product?
The elastomeric insulation features Class 0 and Class 1 fire ratings according to BS 476 Part 6 & Part 7, alongside a Flame Spread and Smoke Developed Index of 25/50 under ASTM E 84.
Does this insulation require an additional vapor barrier?
No, the built-in closed-cell structure operates as an inherent vapor barrier, which eliminates the necessity and cost of installing an external vapor retarder.
How does the insulation handle UV and environmental weathering?
It offers excellent UV and ozone resistance, tested under ASTM G23 and GB/T 7762-1987, which protects the material from premature degradation in exterior conditions.
What is the thermal conductivity (K-Value) of the material?
The material exhibits very low thermal conductivity: ≤0.030 W/(m.k) at -20°C, ≤0.032 W/(m.k) at 0°C, and ≤0.036 W/(m.k) at 40°C, ensuring optimal energy conservation.
Is this product resistant to mold and fungal growth?
Yes, it has been certified with "Good" fungi resistance under ASTM 21 standards, making it highly suitable for clean air environments and HVAC/R systems.

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