Silicone Sealing RingA type of seal ring, made from various silicones, it is used to secure circular covers, ensuring a perfect fit between the gaps of the bearing's sleeve or gasket. Compared to seal rings made from other materials, it offers superior performance in preventing water or oil leakage. Currently, it is mainly used for waterproof and保鲜 sealing in everyday items such as storage containers, rice cookers, water dispensers, lunch boxes, magnetized cups, coffee makers, etc. It is convenient, safe, and environmentally friendly, and has won the favor of many.
Silicone O-Ring vs. Other Material Seals:
Excellent Weather Resistance
Weather resistance refers to a series of aging phenomena such as fading, discoloration, cracking, powdering, and strength reduction that occur due to external conditions like direct sunlight and temperature changes. UV radiation is a primary factor accelerating the aging of products. The Si-O-Si bond in silicone rubber is highly stable against oxygen, ozone, and UV radiation, offering excellent resistance to erosion by ozone and oxides. Even without any additives, it exhibits excellent weather resistance, preventing cracking even after long-term outdoor use.
Material: Safe and Environmentally Friendly
Silicone rubber boasts unique physiological inertness, being odorless and tasteless, and retaining its color and resistance to yellowing over long-term use. It is less susceptible to external environmental interference and meets national food and hygiene standards. It is widely used in food processing, aluminum silver paste, and various oil filtration and purification applications.
Good electrical insulation properties
Organic silicone boasts excellent electrical insulation properties, as well as superior corona resistance (the ability to withstand quality degradation) and arc resistance (the capability to resist deterioration caused by high-voltage arcs).

Four: High breathability and selective gas permeability
Due toSiliconeThe molecular structure of silicone seal rings enables excellent breathability and selectivity to gases. At room temperature, the permeability of silicone to air, nitrogen, oxygen, carbon dioxide, and other gases is 30-50 times higher than that of natural rubber.
Five: Moisture Absorbent Properties
Silicone rings have a low surface energy, which enables them to absorb moisture from the environment and act as a barrier.
Wide temperature range for both high and low temperatures
1. High-Temperature Resistance: Silicone-made sealing rings offer superior heat resistance compared to standard rubber, allowing them to be heated under high temperatures without deforming or releasing harmful substances. They can be used at 150℃ almost indefinitely without any performance degradation, and can be continuously used at 200℃ for 10,000 hours, and can also withstand temperatures up to 350℃ for a certain period. They are widely used in applications requiring heat resistance, such as water bottle sealing rings.
2. Low Temperature Resistance: Regular rubber becomes rigid and brittle at -20℃ to -30℃, whereas silicone rubber maintains good elasticity down to -60℃ to -70℃. Certain special formulations of silicone rubber can even withstand even more extreme low temperatures, such as low-temperature seals, which can go as low as -100℃.
Yongle Rubber & PlasticThe company has successfully passed the ISO9001 certification. We specialize in the production of platinum silicone tubes, peristaltic pump silicone tubes, food molding silicone parts, and silicone, as well as custom manufacturing of sealing components for plastic products. With the competitive strategy of "Better Products, Better Services, and a Better Image," we continuously undergo transformation and management innovation to enhance our comprehensive corporate competitiveness.







