Technical SpecificationsApplication Recommendation

Closed Cell NBR Rubber Foam Insulation

  • The below average physical properties are values obtained in accordance with accepted test methods.
  • At -40°C, Insulflex Closed Cell Insulation becomes hard and as temperature drops below -40°C will be increasingly brittle; however this hardening chracteristic does not affect thermal or water vapour permeability.
  • The Fire rating standard method of tests conducted under controlled laboratory conditions is a measure of a material to spread flame when compared to a known standard and is not intended to reflect hazards presented by this or any material under actual fire conditions.
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Average Physical Properties Rating Test Method
Density 50 kg/m3 to 70 kg/m3 (Tubing) ASTM D1667
40 kg/m3 to 70 kg/m3 (Roll)
Thermal Conductivity ('K' Value) at 20˚C mean temperature 0.034 W/mk ASTM C518
Service Temperature C -50˚C to + 105˚C ASTM C534
Water Absorption (% by volume) < 0.2% by volume ASTM C209
Water Vapour Permeability ≤ 1.73 x 10-14  g/Pa.m.s ASTM E96
Water Vapour Resistance µ Factor ≥ 10,000 ASTM E96
Thermal Stability (% shrinkage) 7 Days -50˚C 0.20 % ASTM C534
7 Days 105˚C 3.30 %
Average Fire Propagation Average Surface Spread of Flame Class 0 & Class 1 BS 476 PART 6 & BS 476 PART 7
Flammability V-0, 5VA, HF-1 UL 94
Reaction To Fire Self-Extinguishing, No Dripping
SIRIM QAS Listed Product
Fire & Rescue Department of Malaysia Approval Class 0 Product (BOMBA)
Singapore Certificate of Conformity (TUV/PSB Class 0)
Singapore Green Building Council (Awarded)
Green Building Council of Australia
REACH and RoHS (SGS)

Thickness Recommendations To Control Condensation In Pipe Insulation Of Cooling Lines

  • Insulation for pipes of 10mm ID to 76mm IPS are available in tubing form with wall thickness of up to 25mm.
  • Insulation above 76mm IPS are in precut sheets and availble up to 38mm thickness.
  • Insulflex thickness recommended within the specified temperature ranges will control condensation on indoor piping under design conditions defined as follows:
    MILD
    Air-Conditioned and arid areas.
    NORMAL
    Maximum severity of most indoor conditions seldom exceed 29.4°C and 70% RH.
    SEVERE & EXTREMELY SEVERE
    Conditions of high humidity or poorly ventilated areas where temperature may be depressed below the ambient.
    Under conditions of high humidity, additional thickness of insulation may be required.
DESIGN CONDITIONS PIPE SIZE PIPELINE TEMPERATURE
14.4°C
(58°F)		 7°C
(44.6°F)		 2.5°C
(36°F)
MILD CONDITION
26.7°C (80°F)
50% RH		 10MM ID TO 76MM IPS
Above 76mm IPS to 127mm IPS
Above 127mm IPS to 354mm IPS		 9mm
9mm
13mm		 9mm
13mm
13mm		 9mm
13mm
13mm
NORMAL CONDITION
29.4°C (85°F)
70% RH		 10MM ID TO 76MM IPS
Above 76mm IPS to 127mm IPS
Above 127mm IPS to 354mm IPS		 9mm
13mm
13mm		 13mm
13mm
13mm		 13mm
13mm
19mm
SEVERE CONDITION
32.2°C (90°F)
80% RH		 10MM ID TO 76MM IPS
Above 76mm IPS to 127mm IPS
Above 127mm IPS to 354mm IPS		 13mm
13mm
13mm		 19mm
25mm
25mm		 19mm
25mm

Thickness Recommendations For Insulation Of Ductings, Tanks And Equipment Of Cooling Systems

DESIGN CONDITIONS PIPELINE TEMPERATURE
15°C (59°F) 12°C (53.6°F) 7°C (44.6°F) 2.5°C (36.5°F)
26.7°C (90°F)
50% RH		 9mm 9mm 13mm 19mm
29.4°C (85°F)
70% RH		 13mm 13mm 19mm 25mm
32.2°C (90°F)
80% RH		 13mm 19mm 25mm 31mm
32.2°C (90°F)
85% RH		 25mm 25mm 31mm 38mm