Kingflex Kingflex

China Kingflex Rubber & Plastic is a flexible closed-foam thermal insulation Manufacturer, Quotes

Kingflex Rubber & Plastic is a flexible closed-foam thermal insulation material foamed from rubber as the main raw material. It has no fiber dust, no formaldehyde, and no chlorofluorocarbons. It is suitable for mediums that destroy the ozone layer. Thermal insulation of various pipes and equipment between from -50 to 110 ℃. 

Product Description

Insulation Material Overview
Product Performance Testing
Insulation Features
Thermal Insulation Application
Insulation Tube Details
Key Product Features
Product structure: Closed cell structure
Excellent ability to prevent the spread of flames
Good ability to control heat release
Flame retardant: Class 0 / Class 1
Easily install
Low thermal conductivity
High water permeability resistance
Elastomeric and flexible material, soft and anti-bending
Cold-resistant and heat-resisting
Shake reduction and sound absorption
Good fire-blocking and waterproof
Vibration and resonate resistance
Beautiful appearance, easy and fast to install
Safety: Neither stimulates the skin nor harms health
Prevent mould from growing
Acid-resisting and alkali-resisting
Long service life: Above 20 years
Dimensions Spec Graph
Available Specifications

Normal Wall Thicknesses: 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 Lengths: 6ft (1.83m) or 6.2ft (2m)

Production Process
Stock and Packing
Technical Certification Diagram 1
Technical Certification Diagram 2
Technical Certification Diagram 3
Installation Case Study
Insulation Application Scene
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
Frequently Asked Questions
What is the thermal conductivity of this insulation material?
The material exhibits low thermal conductivity values of ≤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, tested in accordance with ASTM C 518 standards.
Does the insulation material offer good fire resistance?
Yes, it has excellent flame-retardant properties with Class 0 and Class 1 ratings as per BS 476 Part 6 and Part 7 tests, as well as a Flame Spread and Smoke Developed Index of 25/50 under ASTM E 84.
What temperature range can this material withstand?
The material is highly durable and operates effectively across a wide temperature range from -50°C to 110°C, based on the GB/T 17794-1999 test standard.
Is this product moisture and mold resistant?
Yes, the closed-cell structure provides high water permeability resistance (μ ≥ 10000) and prevents mould growth, tested under ASTM 21 standards.
What wall thicknesses and lengths are available?
It comes in wall thicknesses of 1/4”, 3/8″, 1/2″, 3/4″, 1″, 1-1/4”, 1-1/2″, and 2” (ranging from 6mm to 50mm). The standard available lengths are 6ft (1.83m) or 6.2ft (2m).
What is the expected service life of this insulation?
Due to its excellent ozone, UV, weather resistance, and flexible elastomeric properties, the material provides a long service life of above 20 years.

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