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Kingflex soft rubber insulation products have such perfect performances as soft, anti-bending, cold-resistant, heat-resisting, fire-blocking, water-proof, low thermal conductivity, shake-reduction and sound-absorption. And every performance index is better than national standard.

Product Description

Kingflex use butyronitrile rubber and polyvinyl chloride (NBR,PVC) as main raw materials through foaming and other special procedures to forming the soft and closed-pore foaming heat-insulating materials. Without Chlorofluorocarbon (CFC) and Formaldehyde. The performance of heat and conductivity factor was lasting and stable and the fire-proof performance is higher(the oxygen index≥40%).With stable performance,anti-cracking,resistance to high and low temperature,and high elasticity and so on,Excellent corrosion resistance makes the product not easy to aging,this product is convenient and simple to install,and using long life.

Premium Material

Made from premium NBR and PVC through advanced foaming procedures, resulting in a soft, closed-pore structure.

Eco-Friendly & Safe

Completely free from Chlorofluorocarbons (CFC) and Formaldehyde, ensuring safe environmental and indoor installation.

High Fire Resistance

Features superior fire-proof capabilities with an outstanding oxygen index of ≥40% for advanced safety standards.

Durable Performance

High elasticity, anti-cracking, corrosion resistance, and superb performance across wide high/low temperature ranges.

Dimensions & Specifications
Kingflex Dimension
Thickness Width 1m Width 1.2m Width 1.5m
Inches mm Size(L*W) ㎡/Roll Size(L*W) ㎡/Roll Size(L*W) ㎡/Roll
1/4" 6 30 × 1 30 30 × 1.2 36 30 × 1.5 45
3/8" 10 20 × 1 20 20 × 1.2 24 20 × 1.5 30
1/2" 13 15 × 1 15 15 × 1.2 18 15 × 1.5 22.5
3/4" 19 10 × 1 10 10 × 1.2 12 10 × 1.5 15
1" 25 8 × 1 8 8 × 1.2 9.6 8 × 1.5 12
1 1/4" 32 6 × 1 6 6 × 1.2 7.2 6 × 1.5 9
1 1/2" 40 5 × 1 5 5 × 1.2 6 5 × 1.5 7.5
2" 50 4 × 1 4 4 × 1.2 4.8 4 × 1.5 6
Technical Specifications
Kingflex Technical Data
Property Unit Value Test Method
Temperature range °C (-50 - 110) GB/T 17794-1999
Density range Kg/m³ 45-65Kg/m³ 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) ASTM C 518
≤0.032 (0°C)
≤0.036 (40°C)
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
Kingflex technical details showcase
Frequently Asked Questions
What are the primary raw materials of Kingflex insulation?

Kingflex insulation materials are primarily manufactured from butyronitrile rubber and polyvinyl chloride (NBR, PVC) as main raw materials utilizing specialized foaming procedures.

Is this insulation material environmentally friendly?

Yes. Kingflex insulation is formulated without Chlorofluorocarbons (CFC) and Formaldehyde, making it environment-friendly and safe for indoor applications.

What is the thermal conductivity of Kingflex insulation?

The material delivers a lasting and stable heat conductivity factor. According to technical tests (ASTM C 518), the thermal conductivity is ≤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.

What is the operational temperature range?

Kingflex insulation performs reliably within a temperature range of -50°C to 110°C, tested in compliance with GB/T 17794-1999 standards.

How does Kingflex perform regarding fire safety?

It features excellent fire safety specifications with an oxygen index of ≥40%. It meets the BS 476 Part 6 & 7 Class 0 and Class 1 standards, and has a flame spread/smoke developed index of 25/50 under ASTM E 84.

Is the material resistant to aging and external environmental conditions?

Yes. Thanks to its closed-pore structure and specific properties, it features good resistance to fungi (ASTM 21), ozone (GB/T 7762-1987), as well as UV and weather exposure (ASTM G23), ensuring a long service life.

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