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Extreme Low Temperature Silicone

Extreme low-temperature silicone sheets and elastomers (PVMQ) remain flexible, resilient, and elastic at frigid temperatures where standard silicones become brittle. Delivering reliable sealing performance down to −130°F (−90°C), these low-temperature silicones are critical for aerospace, defense, cryogenic, and arctic environments where seal failure is not an option. 

This spec-grade silicone meets A-A-59588 CL1A/1B and AMS 3334, 3335, 3336, 3337, and 3338 requirements

Every batch is Made in USA under ElastaPro’s ISO 9001:2015 / AS9100D quality system and shipped with a complete Certificate of Analysis (COA).

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Need Low Temp Silicone Sheeting or Slit Rolls?

We supply continuous rolls, pre-cut sheets, and uncured compounds with low minimums and fast lead times.

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Note: ElastaPro also makes an extreme low temperature silicone with high strength.

Extreme Low Temperature Silicone Sheets (30 to 80 Durometer)

Choose extreme low temperature silicone sheet in these durometers (Shore A).

  • ESS30LT – 30 Durometer
  • ESS40LT – 40 Durometer
  • ESS50LT – 50 Durometer
  • ESS60LT – 60 Durometer
  • ESS70LT – 70 Durometer
  • ESS80LT – 80 Durometer

Standard Sheet Sizes & Roll Dimensions

Solid silicone sheet from ElastaPro is available in these sizes and roll dimensions.

Widths

  • Standard: 36″ (914 mm) and 48″ (1219 mm)
  • Custom: Up to 67″ (1701.8 mm) — among the widest available in the industry

Linear Lengths

  • Continuous rolls up to 300+ yards depending on thickness

Thickness Range

  • 0.005″ to 0.675″ (0.13 mm to 17.145 mm)

Cut Sheet Sizes

  • 12″ × 12″
  • 24″ × 24″
  • 36″ × 36″
  • 48″ × 48″
  • Custom dimensions available

Extreme Low Temperature Silicone FAQs

What is extreme low-temperature silicone, and how does it compare to standard silicone?

Extreme low-temperature silicone is a specialized grade of silicone rubber engineered to remain flexible, elastic, and functional at frigid temperatures far below the limit of general-purpose formulations. While standard silicones typically become brittle and crack around −60°C (−76°F), extreme low-temperature silicone remains stable and pliable down to −100°C (−148°F) or lower depending on the specific compound formulation.

What are the key advantages of using extreme low-temperature silicone rubber?

Extreme low-temperature silicone offers critical performance benefits in severe cold environments, including:

  • Superior Cold Flexibility: Resists embrittlement and cracking under cryogenic or arctic conditions.

  • Broad Operating Range: Maintains thermal stability and mechanical properties across an extreme range from −100°C to +200°C (−148°F to +392°F).

  • Mechanical Durability: Preserves essential tensile strength and elongation under severe environmental stress.

  • Weathering & Chemical Resistance: Withstands UV, ozone, and sub-zero weathering while remaining chemically inert for aerospace, medical, and cryogenic fluids.

What applications and industries require extreme low-temperature silicone?

Because it maintains a reliable seal under extreme cold, this material is specified across high-demand sectors including:

  • Aerospace & Aviation: High-altitude, unheated structural and enclosure seals.

  • Cryogenic Equipment: Gaskets for liquefied gas storage tanks and transfer lines.

  • Arctic Energy Operations: Seals and dampening components for polar oil and gas exploration.

  • Military & Defense: Electronics enclosures exposed to sub-zero military environments.

  • Medical & Cold Chain: Ultra-low temperature (ULT) medical freezers and pharmaceutical storage logistics.

What is the continuous operating temperature range for extreme low-temperature silicone?

Extreme low-temperature silicone is engineered to operate continuously across a wide thermal window—typically from −100°C to +200°C (−148°F to +392°F). This allows the material to withstand extreme thermal cycling where equipment fluctuates between cryogenic temperatures and high-heat operating cycles without losing structural integrity or sealing performance.

Is extreme low-temperature silicone chemically inert and weather-resistant?

Yes. In addition to sub-zero flexibility, extreme low-temperature silicone exhibits high chemical inertness and strong resistance to UV radiation, ozone, and harsh outdoor weathering. These properties prevent material degradation, hardening, or chemical breakdown when used in exposed arctic environments, aerospace systems, or sensitive medical equipment.