The silicone sealing ring is a high-performance elastic sealing component made from food-grade or industrial-grade silicone rubber. It is widely used to prevent leakage of air, water, oil, and other fluids in mechanical, electronic, and consumer product assemblies.
With excellent flexibility, compression resistance, and temperature stability, silicone sealing rings provide reliable sealing performance in both static and dynamic applications.
We support customized production in different sizes, hardness levels, colors, and material grades to meet various industrial and consumer requirements.
Key Features and Advantages
Excellent Sealing Performance
Silicone sealing rings provide reliable sealing under compression, preventing leakage of liquids, gases, and dust.
- Stable sealing under long-term compression
- Effective leak prevention in static and dynamic conditions
- Suitable for precision assembly applications
Wide Temperature Resistance
Silicone material performs well under extreme temperature environments.
- Operating temperature range: -40°C to 200°C
- No hardening at low temperature
- No deformation at high temperature
High Elasticity and Durability
The material maintains flexibility and resilience after repeated use.
- Strong compression recovery
- Long service life
- Resistant to permanent deformation
Chemical and Environmental Resistance
Silicone rubber offers stable performance in harsh environments.
- Resistant to water, ozone, and UV exposure
- Compatible with mild acids and alkalis
- Suitable for indoor and outdoor applications
Food Grade and Medical Grade Options
We offer different material grades depending on application requirements.
- FDA / LFGB food-grade silicone available
- Medical-grade silicone compliant with ISO 10993
- Industrial-grade silicone for mechanical applications
Manufacturing Process
Silicone sealing rings are produced through precision molding technology:
- Raw Material Mixing
Silicone rubber compound is prepared with specific hardness and performance requirements. - Compression or Injection Molding
The material is molded into ring shapes using high-precision molds. - High Temperature Vulcanization
Ensures stable mechanical and chemical properties. - Post Processing
Trimming, surface treatment, and inspection. - Quality Control
Dimensional accuracy and sealing performance are tested.
Technical Specifications
| Item | Description |
|---|---|
| Product Name | Silicone Sealing Ring |
| Material | Silicone Rubber (Food / Medical / Industrial Grade) |
| Hardness Range | 20A – 80A (customizable) |
| Temperature Range | -40°C to 200°C |
| Color | Transparent / Black / Custom Colors |
| Shape | O-ring, square ring, custom gasket |
| Process | Compression / Injection Molding |
| Certification | FDA / LFGB / ISO 10993 (optional) |
Applications
- Water bottle and thermos sealing systems
- Household appliances sealing components
- Automotive sealing systems
- Medical devices and fluid systems
- Industrial machinery sealing parts
- Electronic enclosure protection
- Plumbing and pipeline sealing
Customization Options
We support full customization based on customer requirements:
- Inner / outer diameter and cross-section size
- Silicone hardness (Shore A range)
- Color and transparency
- Material grade selection (food / medical / industrial)
- Special performance requirements (oil resistance, high temperature, etc.)
Frequently Asked Questions
What is the main function of a silicone sealing ring?
It provides a tight seal to prevent leakage of liquids, gases, or dust between two connected parts.
Can silicone sealing rings be used for food contact products?
Yes, food-grade silicone complies with FDA and LFGB standards for safe use in food and beverage applications.
Are custom sizes available?
Yes, we support full customization based on drawings or samples.
How long is the service life?
Under normal conditions, silicone sealing rings can maintain performance for several years without significant deformation.
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