Aeroflex USA
Aeroflex 204-AC1238 - AC EPDM Elastomeric Tubing Insulation, 1/2" ID X 3/8" Wall Thickness, Fits 1/2" OD Copper Tubing
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Aerocel EPDM Tube and Sheet insulation is a flexible, closed-cell and light weight EPDM* based elastomeric material designed for insulating liquid cooling and heating lines. 3/8", 1/2", 3/4", 1" 1-1/4", 1-1/2" and 2" wall in popular I.D. sizes from 1/4" ID up to 16" ID. The closed-cell structure of Aerocel Pipe insulation makes it the most efficient elastomeric insulation.

Aerocel EPDM is manufactured to consistently provide tested values - not theoretical calculations - on these key performance criteria for mechanical system insulation:

Thermal Conductivity: 0.245
Water Vapor transmission: 0.03
Fire Rating: Will not contribute significantly to fire (simulated end-use testing).

Aerocel Pipe insulation in 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2" and 2" thicknesses has a flame spread rating of 25 or less and a smoke developed rating of 50 or less as tested by ASTM E 84 "Surface Burning Characteristics of Building Materials."

  • UV Resistant
  • Low thermal conductivity
  • Easy to install
  • 25/50 rated through 2" wall
  • Versatile for heating, AC, refrigeration and plumbing
  • EPDM Rubber
  • Moisture Resistant
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Name Aeroflex 204-AC1238 - AC EPDM Elastomeric Tubing Insulation, 1/2" ID X 3/8" Wall Thickness, Fits 1/2" OD Copper Tubing
Brand Aeroflex USA
Item Number AC1238
Manufacturer Product Number 204-AC1238
SKU - PIM Number 1381152873022
ERP Number 312571
UPC 204-AC1238
Unit of Measure EACH
Weight 0.5 Pound (lb.)
Length 72.0 Inches (in)
Width 1.2 Inches (in)
Height 1.2 Inches (in)
Hazardous Material No
EPA Cert Required No
Country of Origin USA
Tier Aerocel EPDM
Flame/Smoke Rating
Insulation Nominal I.D. 1/2"
Iron Pipe Nominal Size 1/4"
R-Value R4.1
Wall Thickness 3/8"
UV Resistant Yes
Diameter 1.25"
Application HVAC Refrigeration
Color White
Composition Synthetic Rubber
Copper Tube Size (OD) 1/2"
For Use With Liquid Oxygen, Liquid Nitrogen, LNG, Ammonia, Halocarbon Refrigerants, Glycol, Chilled Water, Plumbing, Hot Water Heating, Radiant Heating, Low Pressure Steam, Solar Water Heating
Functions Save Energy, Condensation Control, Process Control
Material EPDM
Size 1/2" ID x 3/8" THK
Temperature Range -297°F to 300°F (-182.7°C to 148.8°C)
LEED Certified Yes
GEM - Case Quantity

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