The vibrating screen sealing ring (sealing skin) is an indispensable wearing part of the circular vibrating screen (three-dimensional vibrating screening-filter, also called vibrating screen). The sealing ring is commonly divided into U-shaped and V-shaped, mainly used. On the mother grid and the dust cover (the special screen also has a special sealing ring, such as ceramic sieve, 450 filter screen, etc.), it is to better seal the gap between the vibrating screen frame to prevent material leakage and A consumable that is designed to mix and reduce the damage of the vibrating screen to the screen frame during vibration.
Commonly used materials for sealing rings are generally divided into rubber sealing ring, silicone sealing ring and polyurethane sealing ring. No special requirements are equipped with rubber sealing ring on the standard machine; silicone and polyurethane sealing ring are mainly used for materials with special characteristics, such as Hygienic safety, high temperature, oily, corrosive and other materials.
Today, we will focus on the performance, advantages and disadvantages of silicone seals:
Silicone sealing apron performance:
1. It has excellent sealing performance and is waterproof.
2. The preservation effect is good, completely non-toxic and tasteless.
3. It can be heated under high temperature, no deformation, no harmful substances.
4. Good tensile strength performance, after special inspection and testing.
5. Long-term use does not fade yellow does not fade.
6. Corona resistance, arc resistance, high and low temperature resistance, good aging resistance, high temperature resistance, FDA and SGS standards.
Advantages of silicone seals:
Heat resistance: Silicone rubber has much better heat resistance than ordinary rubber. It can be used almost forever at 150° without performance change. It can be used continuously for 10,000 hours at 200° and for a period of time at 350°. . Widely used in applications requiring heat resistance, hot water bottle seals, pressure cooker ring heat-resistant handles.
Cold resistance: ordinary rubber is -20° to -30° late, that is, silicone rubber still has good elasticity at -60° to -70°, and some specially formulated silicone rubber can withstand extremely low temperatures, such as : Low temperature seal.
Silicone sealing ring disadvantages:
Not recommended for use in most thick solvents, oils, thick acids and diluted sodium hydroxide.
In general, in addition to the pharmaceutical process and food production process using silicone sealant and sealing ring, other industries such as chemical, abrasive, building materials, environmental protection, metallurgy and other industries can use ordinary rubber seals and seals.
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