Engineers and designers who searching for an exact temperature point at which silicone rubber can begin to degrade in application often ask this question “what exactly is the melting point of silicone sealant”?

It is understood that while most plastics will begin to melt at high temperatures, silicone does not have a melting point and remains solid until combustion occurs.

Silicone is not a flammable material. It can catch fire and burn, but only at extremely high temperatures.

Silicone has an ignition temperature of 842 degrees Fahrenheit (450 Celsius)

At high temperatures (200-450oC), silicone rubber (not silicone sealant) will slowly lose its mechanical properties over time, becoming brittle.

In the majority of cases, experts are unable to provide a clear response without first discussing the atmosphere in which the silicone will be used and the temperature(s) to which the substance will be exposed.

Adding flame retardant additives to the manufacturing process is a common way to increase resistance to high temperatures and flames.

This not only raises the temperature at which silicone ignites, but it also improves its stability at high temperatures and changes the way it burns.

Flame retardant silicones from Simseal Silicone Sealants have been tested to AS1530.3, EN45545, and other standards, ensuring your safety in high-temperature applications.

Simseal silicone sealant is a one-part silicone sealant. It’s an all-weather, high-expansion, fire-resistant silicone sealant with a 4-hour fire rating

Identified use of fire-rated silicone sealant

Designed for use in a variety of joint configurations, including expansion and construction joints in walls and cladding panels, sealing of service penetrations, roofing, and conservatory applications.

Safety Precautions: First aid measures

General: In all cases of doubt or when symptoms persist seek medical attention. Never give anything by mouth to an unconscious person.

Skin contact: Wash skin thoroughly with soap and water or a recognized skin cleanser. DO NOT USE SOLVENT OR THINNERS. Seek medical attention if irritation persists.

Eye contact: Contact lenses should be removed. Irrigate copiously with clean, freshwater for at least 10 minutes holding eyelids apart, and seek medical advice.

Ingestion: If accidentally swallowed wash mouth with water and give large volumes of water to drink. DO NOT induce vomiting. Seek medical attention.

Inhalation: Remove to fresh air. If symptoms persist, or if in doubt, seek medical attention.

Simseal Silicone Sealants have a great range of silicone sealants including fire-rated silicones

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