Mil-Spec Aluminized Silicone Coated Fiberglass, Up to 260°C

Material Specification: 1203 Military Grade

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WARNING: Raw materials are not sold separately, please contact the sales department for any special requirements.


  • High Temperature Heat Reflective Fiberglass
  • Good Fluid & Flame Resistance
  • Ideal For Military & Aerospace Applications
  • Round, Flat & Rectangular Shapes Available
  • Many Closure Types Available

ALSR-15 is an extremely flexible, medium weight Silicone coated fiberglass cloth with a heat reflective Aluminized layer on one side that conforms to AMS-3673 formerly Mil-C-27347 and Naval Ordinance Specification 10001OS10591A. Designed to reflect over 90% of the thermal radiation from intense heat sources, this material makes an ideal high temperature jacketing system for electrical wires and cables. The Silicone rubber coating is fluid resistant, flame retardant and exhibits heat energy-absorbent properties which provide additional protection. ALSR-15 is ideal for high performance military and aerospace applications. The material has an operational temperature range of -55°C to 260°C.


  • Mil-Spec: SAE AMS-3673 A and B, FED-STD-191
  • Flame Retardant: 10 sec. (flame)
  • Thickness: 0.015"
  • Material: Aluminized Silicone-Coated Fiberglass
  • Maximum Operating Temperature: 500°F
  • Minimum Operating Temperature: -67°F
  • Shelf Life: 60 Months
  • Tear Strength: 3 lbs/min (warp & fill)
  • Tensile Strength: 150 lbs/min (warp) | 150 lbs/min (fill)
  • Specifications subject to change without notice. All statements and technical information contained herein are based on tests we believe to be reliable, but the accuracy or completeness is not guaranteed under all circumstances. Before using Zippertubing® products, the user shall determine suitability for the intended use, and user assumes all responsibility for improper selection. Published attenuation values of Zippertubing® shielding have been verified by laboratory testing of the respective shielding materials. Actual installed attenuation values may differ due to installation techniques and final assembly operation parameters which are beyond the control of Zippertubing®. Actual attenuation values can only be determined by the end user testing the completed assembly. U.S. and International Patents and patents pending. © The Zippertubing® Company, Chandler, Arizona.

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