The toxicity of fluorosilicone is closely related to its composition, usage conditions, and product quality. The main conclusions are as follows:

Relatively safe under normal conditions

Fluorosilicone is chemically stable at normal operating temperatures (typically ≤200°C) and does not release toxic substances, making it safe for use in industrial seals, aviation components, and other applications. Its chemical and high-temperature resistance make it superior to ordinary rubber in extreme environments.

High-temperature decomposition produces toxic substances

When temperatures exceed 300°C (such as when exposed to open flames or gas cutting), fluorosilicone decomposes and releases toxic fluorine-containing gases, which irritate the respiratory tract and eyes. Long-term inhalation may be harmful to health. Strictly avoid contact with decomposition products.

Prohibitions for medical and food contact

Liquid fluorosilicone rubber is explicitly prohibited from use in medical implants, food containers, or pharmaceutical packaging due to the potential for its components to migrate into the human body or food. Specialized biocompatible materials are required for use in the medical field.

Additional Risks of Substandard Products
Fluorosilicone produced by unregulated manufacturers may contain residual harmful additives (such as industrial dyes and plasticizers) or heavy metals (lead and cadmium), releasing carcinogens such as formaldehyde and benzene during use.