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Storage (O-Rings) |
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 Shelf-life of an O-Ring depends
upon the characteristics of each elastomer present in the
compound and also upon the environmental conditions. With
optimum packaging and storage conditions, NBR will have
an average shelf-life of 5 years; FKM up to 10 years. |
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Rubber
deterioration is normally due to environmental
conditions. Recommended storage conditions are:
- storage
temperature should be around 50/68°F and humidity of 65/75%
- suitable packaging
to protect the rubber goods against heat, direct
sun-light or artificial lighting and ozone
- rubber parts must
always be stored in a relaxed state, free from
tension or strain induced by deformations.
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Warehouse
buildings should be well ventilated, at a moderate
temperature and sheltered from direct sunlight. In
addition to atmospheric ozone, this active contaminant is
also generated by electric motors and by mercury vapor
lamps. Ozone must be avoided whenever possible. Before
using rubber goods that have been stored for an extended
period of time, it is advisable to perform routine
testing of physical and mechanical properties to insure
compound integrity. In case of fire of elastomeric
materials, noxious and toxic by-products may be formed. |
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