UL 94 V-0 Silicone Sheeting & 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:

ESS60UL94V0-Brown: 60 Durometer UL 94V-0 Flame-Retardant Grade Sheet
ESS65UL94V0-Black: 65 Durometer UL94V-0 Extreme Flame-Retardant Grade Sheet

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.

What is the correct way to write UL94V-0 and why are there so many variations?

The flame-retardant standard UL 94 V-0 is written in several different ways depending on capitalization, spacing, punctuation, and typographical errors.

The correct, official designation by Underwriters Laboratories is UL 94 V-0 (using the number zero, not the letter “O”).

Here are all the common variations grouped by how they appear in datasheets, engineering prints, and manufacturing specifications:

Standard & Official Variations

These are the most common acceptable formats found in technical documentation:

UL 94 V-0 (Official format with spaces and a zero)

UL94 V-0 (No space after UL)

UL94V-0 (Compressed format, very common in blue prints)

UL 94V-0 (Space only after UL)

“Letter O” Variations (Technical Misspellings)

Because the number “0” and the capital letter “O” look identical in many fonts, people frequently substitute the letter. While technically incorrect, these are widely recognized in the industry:

UL 94 V-O

UL94 V-O

UL94V-O

UL 94V-O

Lowercase & Text Variations

In informal writing, emails, or search queries, you will often see it written without formal capitalization:

ul94v0 / ul94vo

ul 94 v0 / ul 94 vo

UL 94 Vertical 0 (Spelling out the “V”, which stands for vertical burning test)

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