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Wholesale KingFlex 6mm-40mm thick Fire Retardant Nitrile Foam Insulation Tube Manufacturer, Manufacturers
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Wholesale KingFlex 6mm-40mm thick Fire Retardant Nitrile Foam Insulation Tube Manufacturer, Manufacturers

Wholesale KingFlex 6mm-40mm thick Fire Retardant Nitrile Foam Insulation Tube Manufacturer, Manufacturers

KingFlex 6mm-40mm thick Fire Retardant Nitrile Foam Insulation Tube adopts high-performance NBR/PVC as the main raw material with various quality supplementary material by special frothing process to produce the soft energy conversation foam insulation. It has closed cell construction and has many great features. It can be widely used in large-scale central and home air conditioning,construction, chemicals, textile and electrical industries. using health and safety, soft and beautiful appearance, easy to bend, convenient and quick construction, without other auxiliary materials. Normal 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).
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Product Description

Insulation Material Display 1
Insulation Material Display 2
Insulation Material Display 3
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Key Product Features
Closed-cell Structure
Low Heating Conductivity
Low Water Absorption Rate
Good Fireproof and Soundproof Performance
Good Aging Resistance Performance
Simple and Easy Installation
Rubber Foam Insulation Materials Application
This material is specifically designed to retard heat transmission and effectively control condensation from chilled-water and refrigeration systems. It also efficiently reduces heat transfer for hot-water plumbing, liquid-heating, and dual-temperature piping.
Ideal Applications:
  • Ductwork
  • Dual temperature and low pressure steam lines
Installation Display
Technical Data Sheet
Technical Data Specifications
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
Application Details 1
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Application Overview
Frequently Asked Questions (FAQ)
What are the primary applications of this rubber foam insulation?
This rubber foam insulation is ideal for retarding heat transmission and controlling condensation in chilled-water and refrigeration systems, as well as minimizing heat transfer in hot-water plumbing, liquid-heating, dual-temperature piping, ductwork, and low pressure steam lines.
What is the operating temperature range for this material?
The material performs safely and effectively within a temperature range of -50°C to 110°C, tested in compliance with GB/T 17794-1999 standards.
How well does this insulation resist fire and smoke?
It features excellent fire safety characteristics, achieving a BS 476 Class 0 & Class 1 fire rating, a Flame Spread and Smoke Developed Index of 25/50 (ASTM E 84), and an Oxygen Index of ≥36 (ISO4589).
Does this insulation offer resistance against environmental factors like U.V. and ozone?
Yes, it demonstrates outstanding environmental durability, with high resistance ratings for fungi (ASTM 21), ozone (GB/T 7762-1987), and weather/U.V. degradation (ASTM G23).
What is the thermal conductivity of this rubber foam insulation?
According to ASTM C 518 testing, the thermal conductivity values are ≤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 high thermal efficiency.
Why is the closed-cell structure important?
The closed-cell structure prevents moisture penetration, resulting in low water absorption rates and stable thermal performance, while preventing condensation and slowing down aging over time.

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