Storage Conditions
Environment, Moisture and Temperature
Rubber, plastic, and polyurethane products should be stored in a cool and dry place. Temperature of the storage should be around 15°C and not surpass 25°C; the relative humidity should be less than 65%. While packing sealing elements, contact with air must be prevented.
Light and Ultra-violet Rays
It is important to protect products against direct sunlight and strong artificial light with a high UV level.
Oxygen and Ozone
No ozone-producing devices such as electric motors or high-voltage devices should be in the storage area.
Deformation
Rubber items should not be subject to tension, pressure or bending. Laying the item flat to avoid crushing would keep it strain-free and reduce chances of deformation.
Contact With Grease and Hydraulic Liquids
Contact with liquids and semi-solid materials, particularly solvents, such as oils or greases must be prevented.
Contact With Metals
Metals like manganese, iron and copper, or copper alloys could damage rubber. Therefore, it is also necessary to avoid contact with hazardous metals or chemical substances.
Shelf Life
Storage life is defined as the maximum period of time that a rubber product, when stored under above conditions and packaged appropriately, may be stored without showing significant loss in properties (mechanical or performance). On the Table-1 you can find recommended shelf life of common Rubber/Elastomer sealing materials according to ISO 2203:2002.
