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What is a silicone seal? What is it used for?
Time:
2022-08-31 11:18
Author:
Web scraping
Silicone seals are a type of silicone product that provide sealing performance across various industries. They offer excellent sealing and electrical insulation properties, along with high tensile strength, and can operate within a temperature range of approximately –40°C to 280°C. How are silicone seals manufactured?
Silicone sealant It is a type of silicone product that provides sealing in a wide range of industries. It boasts excellent sealing performance, electrical insulation properties, and high tensile strength, with a service temperature range of approximately –40 to 280°C. How are silicone seals manufactured?
The operator introduces the vulcanizing agent into the rubber according to the formulation, then feeds the silicone rubber into the mixing mill, where it is blended and cut into strips—typically no wider than the extruder’s feed opening. Once the extruder is started, the cooling‑water valve is opened, allowing the rubber strips to enter the extrusion barrel naturally via the forced‑feed device; a rotating screw conveys the material toward the die head. During this conveyance, the compound temperature is carefully maintained within the process‑specified range by adjusting the cooling‑water valve, ensuring thorough plasticization and densification. Thanks to the screw, the rubber undergoes intensive kneading throughout processing, promoting molecular interlocking, increasing density, and stabilizing flow characteristics, thereby enhancing the quality of the silicone sealing components.
The strength of silicone sealing strips is as follows: 1. Silicone exhibits strong chemical inertness, giving round silicone sealing strips excellent aging resistance and corrosion resistance. 2. Their surfaces can be either smooth or textured; they operate reliably across a temperature range of –70°C to 300°C, are available in custom colors, and meet environmental certification standards. 3. Thanks to silicone’s outstanding sealing performance, these round sealing strips are suitable for various lubricated surfaces and provide shock absorption, waterproofing, and dust‑proofing. 4. Solid round silicone sealing strips are environmentally safe—non‑toxic and odorless—and are food‑grade, making them suitable for use in food processing and medical applications. 5. Solid round silicone sealing strips exhibit minimal shrinkage and deformation, possess high elasticity, feature a non‑sticky surface, offer good breathability, and deliver a smooth, aesthetically pleasing finish.
Characteristics of silicone seals:
1. Outstanding shrinkage deformation capability;
2. Resistant to neutral solvents;
3. Excellent heat and cold resistance;
4. Excellent electrical insulation and resistant to aging;
5. Excellent resistance to ozone and oxidative corrosion.
Silicone seals are commonly used in everyday products such as rice cookers, drinking cups, food storage containers, insulated boxes, and coffee makers. Without silicone seals, these items would lack proper sealing. So, what exactly is the role of silicone seals?
1. Silicone seals offer excellent sealing performance, achieving a superior seal that prevents water from penetrating the sealed cavity.
2. Silicone seals exhibit excellent tensile strength; even under substantial tensile forces, they remain fully open without deformation.
3. Silicone seals offer excellent preservation performance, keeping food and other perishable items fresh; they are non-toxic and harmless, making them an environmentally friendly, green, and healthy product.
4. Silicone seals exhibit excellent adaptability; even when subjected to high-temperature heating, they neither deform nor alter their physical state, and they do not release any toxic or harmful substances.
5. Silicone seals exhibit excellent insulation properties and remain unaffected even at high temperatures.
6. Silicone seals exhibit a range of excellent properties, including corona resistance, arc resistance, resistance to high and low temperatures, and aging resistance.
7. Silicone seals have a long service life and do not yellow or fade even after prolonged use.
8. Silicone seals exhibit superior elasticity compared to conventional rubbers, maintaining excellent flexibility even at temperatures as low as –60°C.
9. Silicone seals must not be used after shrinking in solvents or oils, nor should they be exposed to concentrated acids or sodium hydroxide.
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