Kingflex Kingflex

China Low Thermal Rubber Foam Insulation Pipe Suppliers, Factories

Product Description

Closed Cell Foam Tube Insulation, using rubber as the main raw material, no fiber, non-formaldehyde, non-CFC and other ozone-depleting refrigerant. It can be directly exposed to the air, nor harm for human health. Standard product is black, there are two major categories: rubber foam insulation sheet and insulation pipe, widely applied in central air-conditioning system water pipelines, ducts, hot and cold water pipeline, mine pipe line system, refrigeration system and HVAC system.

  • 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).
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
Closed Cell Foam Tube Insulation Details
Closed Cell Foam Insulation Pipes
Closed Cell Rubber Foam Insulation Sheet

Strict Quality Control System

We have a sound and strict Quality Control System. Every order will be checked from raw material to the final product. To keep stable quality, we make out our own testing standard, which has higher requirements than testing standards domestically or abroad.

Quality Control Testing
Testing standard inspection

Professional Shipping and Forwarding

We have a very professional forwarder with 10 years' cooperation relationship, always we can supply the most competitive sea freight to lower your shipping cost.

Professional Packing
Shipping and Logistics

Frequently Asked Questions

Q1: What are the primary applications of this closed cell foam insulation?

A1: It is widely applied in HVAC systems, central air-conditioning water pipelines, ducts, hot and cold water pipelines, mine pipeline systems, and refrigeration systems.

Q2: What temperature range can this rubber foam insulation withstand?

A2: The insulation is designed to operate safely within a temperature range of -50°C to 110°C, tested in accordance with GB/T 17794-1999.

Q3: Does the insulation material release harmful substances or ozone-depleting gases?

A3: No. The material uses rubber as the main raw material and is fiber-free, non-formaldehyde, non-CFC, and free of other ozone-depleting refrigerants, making it safe for direct air exposure.

Q4: What is the fire rating and safety standard of the product?

A4: The product achieves Class 0 & Class 1 fire ratings under BS 476 Part 6 & Part 7, and meets the 25/50 Flame Spread and Smoke Developed Index standards of ASTM E 84.

Q5: What standard lengths and thicknesses are available for the insulation tubes?

A5: They come in standard lengths of 6ft (1.83m) or 6.2ft (2m). Available nominal wall thicknesses include 1/4”, 3/8″, 1/2″, 3/4″, 1″, 1-1/4”, 1-1/2″, and 2” (6mm to 50mm).

Q6: How do you guarantee the quality and shipping reliability of the orders?

A6: We perform rigorous inspections from raw materials to final products based on strict testing standards. For shipping, we work with professional logistics partners to optimize sea freight and lower costs.

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