Silicone gaskets are essential components in high-performance environments where sealing integrity cannot be compromised. Their ability to maintain physical properties under extreme thermal and chemical stress makes them a primary choice for engineers across various sectors.

At Sevitsil, we specialize in producing silicone gaskets in three primary formats: Solid, Sponge, and Custom Molded. Selecting the correct configuration is the first step toward preventing leaks and ensuring long-term operational reliability.

Key Properties of Silicone Gaskets

Silicone rubber is distinguished by its unique polymer chain structure, which provides several technical advantages over organic elastomers:

• Thermal Stability: Maintains elasticity from -60°C to over 250°C.
• Chemical Inertness: Resistant to oxidation, ozone, and many non-polar solvents.
• Compression Set Recovery: High resilience ensures the gasket returns to its original shape after sustained pressure.
• Dielectric Strength: Excellent electrical insulation for sensitive electronic assemblies.

Comparing Gasket Formats: Which Configuration Do You Need?

1. Solid Silicone Gaskets

Solid silicone is manufactured as a dense, non-porous sheet or profile designed for high-pressure applications.

• Performance: Maximum impermeability to gases and liquids.
• Typical Uses: Hydraulic seals, automotive fluid systems, heavy-duty flange sealing.

2. Sponge Silicone Gaskets

Sponge gaskets feature a closed-cell structure, offering lightweight and compressible sealing solutions.

• Performance: Effective sealing on uneven surfaces with low clamping force.
• Typical Uses: Enclosures, HVAC systems, lighting, vibration and acoustic control.

3. Custom Molded Silicone Gaskets

Custom molding is ideal when standard profiles cannot meet complex geometry requirements.

• Performance: High precision with complex 3D geometries.
• Typical Uses: Medical devices, aerospace assemblies, high-volume precision components.

Industry Applications

• Food & Beverage: FDA-compliant gaskets for hygienic processing and steam cleaning.
• Pharmaceutical: Cleanroom-manufactured gaskets for contamination-free environments.
• Electronics: Thermal protection for sensitive electronic systems.
• Automotive & Aerospace: High-temperature seals for engines, sensors, and firewalls.

Selecting the Right Material for Your Application

Engineering a reliable seal requires evaluating key environmental factors. At Sevitsil, we assess:

• Operating Temperature: Minimum and maximum exposure levels.
• Chemical Exposure: Oils, solvents, and cleaning agents.
• Pressure Requirements: Mechanical load and sealing force.
• Geometry: Selecting between solid, sponge, or molded formats.

Technical Consultation

Selecting the wrong gasket material or configuration can lead to premature failure and costly downtime. At Sevitsil, we leverage our manufacturing expertise to help you identify the precise silicone grade and format tailored to your requirements.

Click here to contact our engineering department for a project consultation and material recommendation.