What Are The Differences Between The Common Rubber Sealing Ring Materials?（一）
The sealing ring is a rubber ring whose cross section is round. Because of its cross section of O type, it is called O type sealing ring.
1. NBR NBR sealing ring is suitable for use in petroleum system, hydraulic oil, glycol hydraulic oil, two ester lubricating oil, gasoline, water, silicon grease, silicone oil and other media. It is the most widely used and lowest cost rubber seal at present. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK and chloroform. The general use temperature range is -40~120 degrees centigrade.
Two, HNBR hydrogenated nitrile rubber sealing ring has excellent corrosion resistance, tear resistance and compression deformation characteristics, ozone resistance, sun resistance, weather resistance better. Better abrasion resistance than nbr. Applicable to washing machines, automotive engine systems. Not recommended for use in alcohols, esters, or aromatic solutions. The general use temperature range is -40~150 degrees centigrade.
Three, SIL silicone rubber sealing ring has excellent heat resistance, cold resistance, ozone resistance, atmospheric aging resistance. Has good insulation performance.But the tensile strength is inferior to that of ordinary rubber and has no oil resistance.Applicable to household appliances, such as electric water heaters, electric irons, microwave ovens, etc.. The utility model is also suitable for various articles which have contact with human bodies, such as a kettle, a water dispenser, etc.. Not recommended for use in most concentrated solvents, oils, concentrated acids, and sodium hydroxide. The general use temperature range is -55~250 degrees centigrade.
Four, VITON fluorine rubber sealing ring, high temperature resistance than silicone rubber, excellent weather resistance, ozone resistance and chemical resistance, cold resistance is bad. They are resistant to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons, and animal and vegetable oils.Applicable to sealing requirements for diesel engines, fuel systems and chemical plants. Mixtures of ketones, low molecular weight esters and nitric acid are not recommended. The general use temperature range is -20~250 degrees centigrade.
Haining Qianlang Rubber Products Factory
ADD: 1st Liluqiao, Zhengyang, Maqiao Street Haining, Zhejiang 314419 China.