Extreme Low-Temperature Silicone Sheeting
Extreme Low-Temperature Silicone Sheeting is a PVMQ-based solid silicone elastomer engineered for cryogenic and extreme cold-weather sealing applications, with an operating range of -130°F to +450°F (525°F intermittent). Available from 30 to 80 Shore A durometer, it meets A-A-59588 CL1A/1B and AMS 3334–3338 specifications, making it suitable for demanding aerospace, defense, and cryogenic programs. The material is made to order and available in many colors, in thicknesses from .010″ to .500″ and widths up to 60″.
Key Properties
- Durometer, Shore “A”: 30 ±5 to 80 ±5 (six grades) — ASTM D2240
- Tensile Strength, psi: 550–750 (varies by grade) — ASTM D412
- Elongation, %: 150–300 (varies by grade) — ASTM D412
- Tear, ppi Die “B”: 80–110 (varies by grade) — ASTM D624
- Service Temperature: -130°F to +450°F (525°F intermittent)
- Specifications: A-A-59588 CL1A/1B; AMS 3334, 3335, 3336, 3337, 3338
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- Specifications
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Physical Properties
| Property | Test Method | 30 Duro | 40 Duro | 50 Duro | 60 Duro | 70 Duro | 80 Duro |
| Durometer, Shore “A” | ASTM D2240 | 30 ±5 | 40 ±5 | 50 ±5 | 60 ±5 | 70 ±5 | 80 ±5 |
| Tensile Strength, psi | ASTM D412 | 750 | 750 | 700 | 650 | 650 | 550 |
| Elongation, % | ASTM D412 | 300 | 300 | 250 | 200 | 175 | 150 |
| Tear, ppi Die “B” | ASTM D624 | 80 | 100 | 100 | 100 | 110 | 110 |
Compliance
- A-A-59588 CL1A/1B — Compliant
- AMS 3334 — Compliant
- AMS 3335 — Compliant
- AMS 3336 — Compliant
- AMS 3337 — Compliant
- AMS 3338 — Compliant
- Cryogenic system seals and gaskets requiring rated performance to -130°F
- Aerospace and defense cold-environment sealing to AMS and A-A specifications
- Low-temperature electrical insulation components in extreme climate service
- Military-spec die-cut gaskets and seals for procurement programs requiring qualified materials
- Outdoor and UV-exposed sealing assemblies in extreme temperature environments
Common industries: Aerospace, defense, cryogenics, military, industrial manufacturing.
Extreme Low-Temperature Silicone Sheeting is a PVMQ (phenyl vinyl methyl silicone) solid elastomer engineered for sealing applications where standard VMQ silicone’s low-temperature flexibility limit is insufficient. The PVMQ chemistry provides rated performance to -130°F — well below the -80°F to -85°F floor typical of general-purpose silicone grades — while maintaining an upper service limit of +450°F continuous (525°F intermittent).
Available across six durometer grades from 30 to 80 Shore A, Extreme Low-Temperature Silicone Sheeting is a made-to-order product offered in many colors, die-cuttable in thicknesses from .010″ to .500″ and widths up to 60″.
Extreme Low-Temperature Silicone Sheeting meets A-A-59588 CL1A/1B and the AMS 3334, 3335, 3336, 3337, and 3338 specifications, establishing it as a qualified material for aerospace, defense, and cryogenic procurement programs. The material is UV and ozone resistant, an excellent electrical insulator, and fabricated from high-quality raw materials.
Its wide durometer range — from a highly flexible 30 Shore A to a firm 80 Shore A — provides design engineers with a single qualified product family spanning a broad range of sealing load and deflection requirements.
Compliant with A-A-59588 CL1A/1B, AMS 3334, AMS 3335, AMS 3336, AMS 3337, and AMS 3338.
What differentiates Extreme Low-Temperature Silicone Sheeting from standard VMQ silicone sheeting?
Extreme Low-Temperature Silicone Sheeting uses a PVMQ (phenyl vinyl methyl silicone) base polymer rather than standard VMQ, which extends the rated low-temperature performance from the -80°F to -85°F floor typical of general-purpose grades down to -130°F. This additional cold-side capability is critical in cryogenic, high-altitude aerospace, and polar environment applications where standard silicone would become stiff and lose sealing effectiveness.
Why does low-temperature flexibility matter in elastomer selection?
Silicone elastomers stiffen as temperature drops, and below their glass transition region they can lose the conformability needed to maintain a seal under compression. Extreme Low-Temperature Silicone Sheeting's PVMQ chemistry is formulated to retain flexibility and sealing force at temperatures as low as -130°F — a property that must be present at the moment of cold exposure, not just at room temperature installation. Applications like cryogenic valves, aerospace hydraulic seals, or cold-weather outdoor gaskets depend on this performance being maintained in service.
What is the operating temperature range for Extreme Low-Temperature Silicone Sheeting?
-130°F to +450°F (525°F intermittent), as listed on the TDS.
Is Extreme Low-Temperature Silicone Sheeting suitable for aerospace and defense procurement programs?
Yes. Extreme Low-Temperature Silicone Sheeting meets A-A-59588 CL1A/1B and AMS 3334, 3335, 3336, 3337, and 3338 specifications, which are commonly cited in aerospace and defense procurement documents for low-temperature silicone elastomers.
How should Extreme Low-Temperature Silicone Sheeting be specified?
Specify Extreme Low-Temperature Silicone Sheeting, durometer (30, 40, 50, 60, 70, or 80 Shore A), thickness, color, applicable compliance specification (A-A-59588 class/grade or AMS number), dimensional tolerances, and finished format. Note that this is a made-to-order product.
