Silicone Gaskets

- Electrical and electronic enclosures (IP-rated sealing)

- Food, beverage, and pharmaceutical processing equipment

- HVAC, lighting, and automotive sealing systems

- Medical and laboratory instruments

- Renewable energy and outdoor equipment

- Machinery and mechanical assemblies requiring heat or chemical resistance

Q:What factors determine the durability and performance of a silicone gasket in high-temperature or high-pressure environments?

A:The durability of a silicone gasket depends on several key factors:

1.Material Composition: Silicone gaskets are made from either solid silicone rubber (HCR) or liquid silicone rubber (LSR). HCR grades with higher durometer (60–80 Shore A) perform better under compression and mechanical stress, while LSR grades are ideal for flexible, precision-molded gaskets with excellent temperature stability.

2.Curing and Crosslinking: The curing method (peroxide vs. platinum catalyst) affects heat resistance and compression set. Platinum-cured silicone offers superior thermal and aging resistance, making it ideal for automotive or aerospace sealing applications.

3.Filler and Additives: Reinforcing fillers like silica increase tensile strength and tear resistance. Special additives can improve oil, flame, or chemical resistance depending on the operating environment.

4.Manufacturing Process:

• Compression molding is cost-effective for large or thick gaskets.
• LSR injection molding ensures tighter tolerances for small or intricate seals.
• Overmolding can bond silicone directly to metal or plastic components for integrated sealing solutions.

5.Temperature & Pressure Range: Standard silicone gaskets can handle –60 °C to +230 °C, while specialized formulations can withstand up to +300 °C. Under high pressure, gasket geometry and compression ratio must be carefully designed to prevent extrusion or leakage.

Hence, the optimal silicone gasket depends on application-specific conditions-temperature, pressure, media exposure, and required precision-all of which dictate the choice of silicone formulation and molding process.

Q:Where is your factory?

A:One is located at Suzhou City, JiangSu Province, another is located at NanXun City, Zhejiang Province.

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