Wholesale elastomeric NBR/PVC rubber foam thermal insulation pipe tubing Manufacturers, Pricelist

Kingflex Rubber Foam Insulation Tube is a flexible elastomeric thermal insulation,supplied as un-split tubing, in: • 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).

Product Description

Rubber Foam Insulation Tube

The expanded closed-cell structure of Rubber Foam Insulation Tube makes it an efficient insulation. It is manufactured without the use of CFC’s, HFC’s or HCFC’s. It is also formaldehyde free, low VOCs, fiber free, dust free and resists mold and mildew. Rubber Foam Insulation Tube can be made with special antimicrobial product protection for added defense against mold on the insulation.

  • CFC & HFC Free
  • Formaldehyde Free
  • Low VOCs & Dust Free
  • Mold & Mildew Resistant
Insulation Application
Insulation Spec Diagram
Specifications & Size Recommendations
NO. Copper Tube Steel Pipe Internal Φ mm 9mm · 3/8" FF 13mm · 1/2" HH 19mm · 3/4" MM 25mm · 1" RR
Nom. ID Inches Nom. ID Inches I.P.S. Inches Φ External mm Φ Nominal mm Ref. Wall*ID Lengths (2m) per cart Ref. Wall*ID Lengths (2m) per cart Ref. Wall*ID Lengths (2m) per cart Ref. Wall*ID Lengths (2m) per cart
1 1/4 6.4 - - - 7.1 - 8.5 9*06 170 13*6 90 19*6 50 25*6 35
2 3/8 9.5 1/8 10.2 6 11.1 - 12.5 9*09 135 13*10 80 19*10 40 25*10 25
3 1/2 12.7 - 12.5 - 13.1 - 14.5 9*13 115 13*13 65 19*13 40 25*13 25
4 5/8 15.9 1/4 13.5 8 16.1 - 17.5 9*16 90 13*16 60 19*16 35 25*16 20
5 3/4 19.1 - - - 19.0 - 20.5 9*19 76 13*19 45 19*19 30 25*20 20
6 7/8 22.0 1/2 21.3 15 23.0 - 24.5 9*22 70 13*22 40 19*22 30 25*22 20
7 1 25.4 - 25.0 - 26.0 - 27.5 9*25 55 13*25 40 19*25 25 25*25 20
8 1 1/8 28.6 3/4 26.9 20 29.0 - 30.5 9*28 50 13*28 36 19*28 24 25*28 18
9 - 32.0 - - - 32.5 - 35.0 9*32 40 13*32 30 19*32 20 25*32 15
10 1 3/8 34.9 1 33.7 25 36.0 - 38.0 9*35 36 13*35 30 19*35 20 25*35 15
11 1 1/2 38.0 - 38.0 - 39.0 - 41.0 9*38 36 13*38 24 19*38 17 25*38 12
12 1 5/8 41.3 1 1/2 42.4 32 43.5 - 45.5 9*42 30 13*42 25 19*42 17 25*42 12
13 - 44.5 - 44.5 - 45.5 - 47.5 9*45 25 13*45 20 19*45 16 25*45 12
14 1 7/8 48.0 1 1/2 48.3 40 49.5 - 51.5 9*48 25 13*48 20 19*48 15 25*48 12
15 2 1/8 54.0 - 54.0 - 55.0 - 57.0 9*54 25 13*54 20 19*54 15 25*54 10
16 2 57.1 - 57.0 - 58.0 - 60.0 - - 13*57 18 19*57 12 25*57 9
17 2 3/8 60.3 2 60.3 50 61.5 - 63.5 - - 13*60 18 19*60 12 25*60 9
18 2 5/8 67.0 - - - 67.5 - 70.5 - - 13*67 15 19*67 10 25*67 8
19 3 76.2 2 1/2 76.1 65 77.0 - 79.5 - - 13*76 12 19*76 10 25*76 6
20 3 1/8 80.0 - - - - - - 13*80 12 19*80 10 25*80 6
21 3 1/2 88.9 3 88.9 80 90.5 - 93.5 - - 13*89 10 19*89 8 25*89 6
22 4 1/4 108.0 - 108.0 - 108 - 111 - - 13*108 6 19*108 6 25*108 5
Tolerance: Thickness ± 1.3mm ± 2.0mm ± 2.4mm ± 2.4mm
Technical Data Specifications
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, ISO 4589
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

Rubber Foam Insulation Tube is used to retard heat gain and control condensation drip from chilled-water and refrigeration systems. It also efficiently reduces heat flow for hot-water plumbing and liquid-heating and dual-temperature piping. The recommended temperature usage range for Rubber Foam Insulation Tube is -297°F to +220°F (-183°C to +105°C). For use on cold pipes, Rubber Foam Insulation Tube thicknesses have been calculated to control condensation on the insulation outer surface, as shown in the table of thickness recommendations.

Frequently Asked Questions
What is the temperature range for this insulation tube?
The recommended operating temperature usage range for the Rubber Foam Insulation Tube is from -297°F to +220°F (-183°C to +105°C), making it suitable for a variety of refrigeration and dual-temperature systems.
How does the insulation prevent condensation?
It uses an expanded closed-cell structure to control condensation drip on chilled-water and refrigeration systems. The specific thicknesses are calculated to retard heat gain and keep the outer surface dry.
Does the product resist mold and mildew?
Yes, the insulation is naturally resistant to mold and mildew. It is fiber-free, dust-free, and can be manufactured with special antimicrobial product protection for extra defense on cold surfaces.
What is the fire rating and safety performance?
The insulation material has a Class 0 & Class 1 fire rating according to BS 476 Part 6 & Part 7, a Flame Spread and Smoke Developed Index of 25/50 (ASTM E 84), and an Oxygen Index of ≥36.
What applications are these insulation tubes used for?
They are widely used to control heat flow and condensation in chilled-water pipes, refrigeration lines, hot-water plumbing, liquid-heating systems, and dual-temperature piping configurations.

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