Extreme Flame Retardant Silicone Sheeting & Uncured Compounds
UL 94 V-0 and FAR 25.853 Flame Resistance
Extreme flame-retardant silicone sheets from ElastaPro meet UL 94 V-0 and FAR 25.853 flammability requirements. Engineered to resist flame spread with low smoke generation and low toxicity (FST), they are ideal for electrical enclosures, mass transit railcars, and aerospace interiors. ElastaPro’s flame-retardant materials in standard black or brown formulations carry an official UL 94 V-0 Yellow Card.
Every batch is Made in USA under our ISO 9001:2015 / AS9100D quality system and shipped with a complete Certificate of Analysis (COA).
Need Extreme Flame Retardant Silicone Sheet or Slit Rolls?
We supply continuous rolls, pre-cut sheets, and uncured compounds with low minimums and fast lead times.
Request a Quote (RFQ)Extreme Flame Retardant Silicone Sheets (60 and 65 Durometer)
Extreme flame retardant silicone sheet from ElastaPro is available in 60-durometer (brown) and 65-durometer (black).
Standard Sheet Sizes & Roll Dimensions
This solid silicone sheet from ElastaPro is available in these sizes and roll dimensions.
| Measurement | Type | Imperial | Metric |
|---|---|---|---|
| Width | Standard | 36" | 914 mm |
| Width | Standard | 48" | 1219 mm |
| Width | Custom | Up to 67" | Up to 1701.8 mm |
| Thickness | Range | 0.020" to 0.375" | 0.508 mm to 9.525 mm |
| Cut Sheet | Standard | 12″ × 12" | 30.48 cm x 30.48 cm |
| Cut Sheet | Standard | 24″ × 24″ | 60.96 cm x 60.96 cm |
| Cut Sheet | Standard | 36″ × 36″ | 91.44 cm x 91.44 cm |
| Cut Sheet | Standard | 48" x 48" | 121.92 cm x 121.92 cm |
| Cut Sheet | Custom | — | — |
| Linear Length | Continuous | Up to 300" ft | Up to 91.44 m |
Understanding Flame Resistance Standards
UL 94 V-0 and FAR 25.853 evaluate flame resistance, self-extinguishing behavior, and drip prevention using vertical flame exposure.
- UL 94 V-0 is a general industrial safety benchmark established by Underwriters Laboratories. It requires a vertically suspended silicone sample to stop burning within 10 seconds of flame removal without producing flaming drips that ignite cotton placed below it.
- FAR 25.853 is a United States Federal Aviation Administration (FAA) requirement tailored specifically for aerospace cabin and cargo interiors. Under FAR 25.853 (typically using a 12-second or 60-second vertical burn test), the silicone sheet must self-extinguish within 15 seconds, limit overall burn length, and ensure any dripping particles extinguish within 3 to 5 seconds on average.
Because silicone inherently possesses strong thermal resistance, adding specialized flame-retardant fillers allows silicone sheeting to satisfy both criteria. It offers low toxicity and minimal smoke density alongside critical fire containment for electronics, mass transit, and commercial aircraft gasketing.
Extreme Flame Retardant Silicone FAQs
What is extreme flame-retardant silicone, and what flammability standards does it meet?
Extreme flame-retardant silicone is a high-performance elastomer compound engineered to extinguish flames quickly, limit flame spread, and emit minimal smoke and toxic fumes when exposed to open fire.
ElastaPro’s extreme flame-retardant silicone sheets meet stringent safety specifications, including UL 94 V-0 flammability ratings (backed by an official UL Yellow Card) and aerospace vertical burn requirements under FAR 25.853.
What industries and applications require UL 94 V-0 and FAR 25.853 flame-retardant silicone?
Because of its exceptional Flame, Smoke, and Toxicity (FST) profile, this material is widely specified for critical safety applications in:
- Aerospace & Aviation: Cabin interiors, light seals, HVAC ducting gaskets, and insulation blankets.
- Mass Transit & Rail: Interior seating gaskets, door seals, and electrical enclosure seals complying with transit flame standards.
- Electronics & Energy: High-voltage electrical enclosures, battery pack gaskets, power distribution cabinets, and circuit breaker insulation.
Can flame-retardant silicone sheeting be supplied with pressure-sensitive adhesives (PSA) or custom die-cut?
Yes. ElastaPro extreme flame-retardant silicone sheeting is easily converted, die-cut, or waterjet-cut into custom gaskets and complex sealing shapes. It can also be supplied with factory-applied flame-retardant or high-temperature pressure-sensitive adhesive (PSA) backings to streamline component placement and assembly.