Wholesale Flexible Foam Rubber Insulation Pipe Supplier, Suppliers

Flexible Foam Rubber Insulation Pipe is designed for the insulation of large surfaces, ideal for the insulation of pipes of large diameters. By reducing the number of sections required they simplify installation, saving on time and labor costs. Facing: Pipe can be covered with aluminum foil and adhesive paper. NBR pipe insulation is a flexible, elastomeric thermal insulation with smooth skin on the outer surface. The expanded closed-cell structure of the synthetic nitrile rubber makes it an efficient thermal insulator for hot water and air conditioning pipe. 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

Rubber Foam Material 1
Rubber Foam Material 2
Rubber Foam Material 3
Rubber Foam Material 4
Low conductivity factor
Good fire-blocking
Closed pore foaming, good damp-proof property
Good pliability
Beautiful appearance, easy to install
Safe (neither stimulate the skin nor harm health), Excellent performance of acid-resisting and alkali-resisting.
Rubber Foam Production
The rubber foam products are produced by imported high-end technology and automatic continuous equipment. Through in-depth research, a rubber foam insulation material with excellent performance has been successfully developed. The major materials used are NBR/PVC.
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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 are the primary materials used in this rubber foam insulation?
The major raw materials used in the production process are premium NBR (Nitrile Butadiene Rubber) and PVC (Polyvinyl Chloride).
What is the thermal conductivity of this insulation material?
The material features an exceptionally low thermal conductivity: ≤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, complying with ASTM C 518 standard.
How does this product perform in terms of fire resistance?
It meets Class 0 and Class 1 fire ratings according to BS 476 Part 6 & 7, with a high oxygen index of ≥36 (GB/T 2406, ISO4589) and a flame/smoke index of 25/50 (ASTM E 84).
What is the applicable temperature range for this insulation?
This rubber foam insulation is designed to operate effectively within a temperature range of -50°C to 110°C, tested under the GB/T 17794-1999 standard.
How does the material prevent moisture penetration?
Due to its closed-cell foaming structure, the material has low water vapor permeability (≤0.91×10 ﹣¹³ Kg/(m.s.pa)) and high water vapor resistance factor (μ ≥10000), offering outstanding damp-proof performance.
Is this product safe for installation and environment resistant?
Yes. It is completely safe as it does not stimulate the skin or harm health. Additionally, it offers excellent resistance against fungi, ozone, ultraviolet (U.V.) rays, and outdoor weathering.

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