Fluorosilicone oil plays a crucial protective role in high-reliability connector sealing.  Thanks to its excellent oil resistance, wide temperature range stability, electrical insulation properties, and chemical inertness, it effectively prevents performance degradation and failure of connectors in harsh environments caused by oil penetration, temperature fluctuations, chemical corrosion, or moisture intrusion.
I. Core Functions of Fluorosilicone Oil in Connector Sealing
Excellent Oil Resistance and Chemical Stability
The trifluoropropyl groups in the molecular structure of fluorosilicone oil give it extremely strong oil and solvent resistance, effectively resisting the erosion of various lubricants, fuels, and chemical media.
In connector applications, it prevents sealing failure and electrical performance degradation caused by the penetration of oily substances, making it particularly suitable for high-reliability applications requiring contact with liquids, such as in aerospace and automotive industries.

Wide Temperature Range Operating Capability
Fluorosilicone oil can operate stably for extended periods from -50℃ to +200℃, and some products can even maintain performance in the range of -60℃ to +250℃.
This wide temperature range adaptability ensures that connectors maintain reliable sealing performance in extreme temperature environments (such as aerospace and military equipment), avoiding the failure problems of traditional silicone oil at high temperatures.

Excellent Electrical Insulation Performance
Fluorosilicone oil has high dielectric strength and low surface tension, providing effective electrical insulation protection for electronic components, preventing short circuits or electrical breakdown.
In high-reliability connectors, this characteristic significantly improves electrical safety and signal transmission stability, making it particularly suitable for high-voltage and high-power electronic equipment packaging.

Waterproof, Moisture-Proof, and Weather Resistance
The hydrophobic and moisture-proof properties of fluorosilicone oil effectively protect electronic components from the effects of humid environments.
In connector sealing applications, it prevents corrosion and insulation performance degradation caused by moisture intrusion, especially suitable for equipment in outdoor, marine environments, or high-humidity conditions.

Long-Term Aging Resistance
Fluorosilicone oil has excellent oxidation resistance and aging resistance, effectively resisting the effects of high temperatures and ultraviolet radiation.
This characteristic ensures that connectors maintain stable sealing performance during long-term use, reducing maintenance costs and extending equipment lifespan. II. Application Forms of Fluorosilicone Oil in Connector Sealing
Fluorosilicone Sealant
Room-temperature curing fluorosilicone sealants, made with fluorosilicone oil as the base material, can be directly used for sealing the joints of connectors.
They possess excellent adhesion and sealing properties, suitable for various metal and non-metal materials. Single-component or two-component products can be selected according to different application scenarios.
Fluorosilicone Sealing Grease
Sealing lubricating grease made from fluorosilicone oil combined with a thickener, offering both sealing and lubrication functions.
Suitable for connectors that require both sealing and lubrication of moving parts, such as rotary joints and sliding contacts, with an operating temperature range of -50℃ to +204℃.
In-Situ Formed Sealing Technology
Fluorosilicone oil-resistant CIPG (Cured-In-Place Gasket) material enables automated precision dispensing, directly forming a uniform and continuous sealing line on the connector contact surface.
This technology eliminates the risk of damage during the installation of traditional sealing rings, and is particularly suitable for the sealing needs of connectors with complex geometric shapes.
Fluorosilicone Rubber Seals
Fluorosilicone oil is used as a key raw material in the production of fluorosilicone rubber O-rings, gaskets, etc., which are widely used in high-reliability connectors in aerospace, automotive, military, and other fields.
These seals can withstand temperatures up to 180℃ under oil immersion conditions and maintain elasticity over a long period within the range of -50℃ to +200℃.