The choice of sealing ring material has an important significance on its sealing performance and service life. The performance of the material directly affects the performance of the seal.
Chinese name
sealing ring
English name
sealing ring
Alias
O-ring
Appearance
Circle
Applications
Bearing seals
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Performance classificationAdvantagesInstallationAttention to the use
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Sealing ring
Sealing ring
Sealing ring
Performance Classification Advantages Installation and Use Precautions Scope of UseMaterial Application
I. NBR Nitrile Rubber Seals: Suitable for use in petroleum-based hydraulic oil, glycerol-based hydraulic oil, di-ester lubricants, gasoline, water, silicone grease, silicone oil and other media. It is the most widely used and lowest cost rubber seal. Not suitable for use in polar solvents such as ketones, ozone, nitro hydrocarbons, MEK and chloroform. General use temperature range of -40 ~ 120 ℃.
Two, HNBR hydrogenated nitrile rubber seals: has excellent corrosion resistance, tear resistance and compression deformation resistance, ozone resistance, sunlight resistance, weather resistance is better. Better abrasion resistance than NBR. Suitable for use in washing machines, automobile engine systems and refrigeration systems using the new environmentally friendly refrigerant R134a. It is not recommended to be used in alcohols, esters or aromatic solutions. General use temperature range is -40~150 ℃.
Three, SIL silicone rubber seals: has excellent heat, cold, ozone, atmospheric aging resistance. Have good insulation properties. But the tensile strength is worse than the general rubber and does not have oil resistance. Applicable to household appliances such as electric water heaters, electric irons, microwave ovens and so on. It is also suitable for all kinds of products that have contact with human body, such as kettle, water dispenser and so on. Not recommended for use in most concentrated solvents, oils, concentrated acids and sodium hydroxide. General use temperature range is -55~250 ℃.