The O-ring is affected by various external environmental factors, such as distortion, oxygen, ozone, light, heat source, humidity, oil, or chemical solvent. The O-ring may fail due to the change of its physical and chemical properties. In din7716, iso2230, din9088 and other standards, the storage, cleaning and maintenance of rubber seals are basically specified.
1: temperature: 5-25 ℃ is the ideal storage temperature. Avoid contact with heat sources and sunlight. The seal taken out from the low temperature storage state shall be placed in the environment of 20 ℃ before use.
2: humidity: the relative humidity of the warehouse shall be less than 70%, to avoid excessive humidity or drying and condensation.
3: Light: avoid sunlight and strong artificial light source containing ultraviolet. UV resistant bags provide the best protection. It is recommended that the windows of the warehouse be painted with red or orange paint or film.
4: radiation: avoid the damage to the seal caused by ionizing radiation.
5: oxygen and ozone: rubber materials shall be protected from exposure to circulating air. This can be achieved by packaging, wrapping, storage in airtight containers or other suitable methods. Ozone is harmful to most elastomers. The following equipment shall be avoided in the warehouse: mercury vapor lamp, high-voltage electrical equipment, electric motor and other equipment.
6: deformation: rubber parts shall be placed in free state as far as possible to avoid tension, compression or other deformation.
7: contact with liquid or semi-solid materials: do not contact solvent, oil, grease or other semi-solid materials.
8: contact with metal or non-metal materials: it is not allowed to contact magnetic materials, cast iron, copper and its alloy, or materials that will damage rubber. PVC material shall not be used for packing seals. Seals of different materials shall not be mixed.
9: cleaning: use soap and water to clean the seals as required. But the water can not contact the fiber-reinforced seal, rubber metal bonding seal, Au material seal. Disinfectants, organic solvents and sharp edged tools shall not be used. After cleaning, the seal shall be dried at room temperature, and the heat source shall not be accessible.
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