Specification Grade Silicones

UL94V-0 Silicone Sheets & Uncured Compounds

ElastaPro manufactures high-performance UL94V-0 silicone solid sheeting, continuous roll stock, and uncured compounds engineered to meet strict fire, smoke, and toxicity (FST) safety requirements. Formulated to achieve the stringent UL 94V-0 vertical burn standard set by Underwriters Laboratories, our flame-retardant elastomers self-extinguish within 10 seconds of flame removal and produce zero flaming drips.

Design engineers and fabricators specify our UL 94 V-0 silicone sheet materials when uncompromising fire protection, environmental sealing, and thermal insulation are mandatory. Looking for additional low-smoke formulations? View our companion extreme flame retardant silicone product line.

Need UL 94V-0   Silicone Sheeting or Slit Rolls?

We supply continuous roll stock, pre-cut solid sheets, and custom uncured compounds with low minimum order quantities, optional pressure-sensitive adhesives (PSA), and rapid turnarounds.

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UL 94V-0 Standard Product Matrix & Durometer Options

We offer certified UL94V-0 silicone sheeting across multiple durometer formulations to suit varying compression forces and gasket seating conditions:

What Defines a UL94V-0 Flammability Rating?

The Underwriters Laboratories UL 94 V-0 standard evaluates how elastomeric and polymeric specimens respond to a controlled vertical flame. To earn an official UL94V-0 rating, a solid silicone specimen must satisfy three strict performance benchmarks during vertical burn testing:

  • 10-Second Self-Extinguishing Limit: The UL 94V-0 silicone specimen must stop flaming within 10 seconds after each test flame application.
  • No Flaming Drips: The material must not drop flaming particles that could ignite dry indicator cotton positioned below the test assembly.
  • Controlled Afterglow: Total afterglow time must not exceed 30 seconds after the second flame exposure.

Technical Specifications & Material Capabilities

ElastaPro manufactures UL94V-0 silicone sheeting to precise dimensional tolerances, enabling clean flash cutting, waterjet cutting, and high-speed rotary die-cutting.

Material Parameter Capability / Value Testing Standard
Flammability Classification Certified UL 94 V-0 / UL94V-0 Yellow Card UL 94 Vertical Burn Test
Aerospace Flammability Passes FAR 25.853 Compartment Interior Specs FAR 25.853 12 & 60 Sec Vertical
Durometer Range 60 or 65 Shore A ASTM D2240
Thickness Capability 0.010″ to 0.500″ (0.25 mm to 12.7 mm) Linear Dimension
Maximum Roll Width Up to 60″ (1.52m) Continuous Rolls Factory Production
Temperature Range -80°F to +450°F (-62°C to +232°C) ASTM D573
Regulatory Compliance REACH, RoHS, and FDA 21 CFR 177.2600 Compliant Global Standards

Target Engineering Applications for UL 94V-0 Silicone

Because of its exceptional flame mitigation, electrical insulation, and weatherability, UL94V-0 silicone sheet stock is widely utilized across demanding industries:

  • Mass Transit & Rail Operations: Low-smoke interior seals, window gasketing, and HVAC duct connectors meeting rail safety codes.
  • Aerospace Components: Certified gaskets for cabin interiors, instrumentation housings, and galley equipment.
  • EV Battery & Electronics Enclosures: High-voltage thermal barrier pads, module seals, and outdoor telecommunication junction box gaskets.
  • Military Defense Hardware: Flame-retardant environmental seals for ground support vehicles and naval radar housings.

Frequently Asked Questions (FAQ)

What is UL94V-0 silicone?

UL94V-0 silicone refers to solid silicone sheet or compound formulated to meet Underwriters Laboratories’ strict UL 94 V-0 vertical flammability standard. It self-extinguishes within 10 seconds of flame contact and prevents flaming droplets.

Does ElastaPro supply official UL 94V-0 yellow card documentation?

Yes. ElastaPro provides full lot traceability, material test reports (MTRs), and documentation supporting our UL 94 V-0 Yellow Card status on file with Underwriters Laboratories.

What is the difference between UL94V-0, UL94 V-1, and UL94 V-2 ratings?

The UL94V-0 rating is the most demanding vertical burn classification. V-0 requires self-extinguishing within 10 seconds with zero flaming drips. V-1 permits burn times up to 30 seconds without dripping, while V-2 permits flaming droplets to ignite surgical cotton below the sample.