Kingflex Kingflex

Wholesale Kingflex rubber insulation pipe Factories, Quotes

Kingflex rubber insulation pipe is characterized by totally closed cell structure and based on high synthetic rubber and widely used for the insulation of pipework and ducting 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).

Product Description

Insulation Material Production
Insulation Application
Insulation Performance

Kingflex is a flexible, closed-cell insulation material with built-in antimicrobial product protection. It is the preferred insulation for pipes, air ducts and vessels in hot and cold water services, chilled water lines, heating systems, air conditioning ductwork and refrigerated pipework.

Flexibility Testing
Material Structure
Application Standard

Features & Applications

Found in commercial, industrial, residential and public buildings, insulation helps to control condensation, protect against frost and reduce energy loss.

  • Reliable, built-in condensation control due to closed-cell structure
  • Effective reduction of thermal and energy loss
  • Class 0 fire classification to BS476 Parts 6 and 7
  • Built-in antimicrobial product protection reduces mold and bacteria growth
  • Certified for low chemical emissions
  • Free of dust, fibre and formaldehyde

Main Application: Chilled water pipes, condense pipes, air ducts and hot-water pipes of air-conditioning equipment, heat preservation and insulation of central air-conditioning system, Every kind of cold/hot medium piping.

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)
≤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
Product Quality
Packaging Detail
Insulation Roll
Insulation Application Detail
Material Sheet
Completed Project

Frequently Asked Questions

Q1: What are the main applications for Kingflex insulation?

A1: It is primarily used for chilled water pipes, condense pipes, air ducts, and hot-water pipes of air-conditioning systems, central air-conditioning, and various cold/hot medium piping networks.

Q2: What is the fire rating and performance of Kingflex insulation?

A2: The insulation has a Class 0 fire classification to BS476 Parts 6 and 7, and meets Class 0 & Class 1 standards. It has a Flame Spread and Smoke Developed Index of 25/50 according to ASTM E 84, with an Oxygen Index of ≥36.

Q3: How does the material prevent mold and bacteria growth?

A3: The insulation material is designed with built-in antimicrobial product protection, which actively reduces the growth of mold and bacteria over time.

Q4: What temperature range can Kingflex insulation withstand?

A4: According to GB/T 17794-1999 test methods, it operates efficiently within a temperature range of -50°C to 110°C.

Q5: Is Kingflex insulation safe for indoor building environments?

A5: Yes. It is certified for low chemical emissions and is entirely free of dust, fibre, and formaldehyde, making it safe for commercial, residential, and public buildings.

Q6: How does the closed-cell structure improve performance?

A6: The closed-cell structure provides reliable, built-in condensation control and effectively minimizes thermal and energy loss, preventing moisture accumulation and frost.

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