O-rings are suitable for use in petroleum-based hydraulic oils, glycol-based hydraulic oils, diester-based lubricants, gasoline, water, silicone greases, silicone oils and other media. Nitrile rubber is the most widely used and lowest cost rubber seal. Not suitable for use in polar solvents such as ketones, ozone, nitrohydrocarbons, MEK and chloroform. The temperature range is usually -40 to 120 °C. Depending on the data, the static application pressure is less than 20Mpa. Sometimes used for dynamic, dynamic pressures of less than 5Mpa, and semiconductor vacuum seals. The available standard sizes are: cross-sectional diameter of about 0.35~12mm and inner diameter of 1000mm and above. The compatibility of the sealing material with the hydraulic oil (liquid): One of the origins of the particle contamination of the hydraulic oil is the "debris" or "wearing debris" that occurs when the sealing material is not compatible with the hydraulic oil. The seal is damaged due to "crushing" or "extracted" inorganic materials and filling and reinforcing materials, so that the seal is damaged and fails, and the oil is contaminated to form a hydraulic pressure. Oil rafting causes failure.
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