Storage
Careful storage, handling and proper installation of seals are necessary to avoid hazards both prior to and during installation which would adversely affect service life.
a) Temperature, humidity: The storage area shall be kept cool (below 30°C) with an average relative humidity of 40% to 70%. Excessive humidity will deteriorate some seal element material as well as cause corrosive damage to metal cases and spring.
b) Sunlight and ozone: To retard ozone ageing, seals shall be kept away from direct or reflected sunlight and electrical equipment that may generate ozone. Excessive heat and/or exposure to ozone can cause premature ageing of the seal element, thus reducing service life.
c) Mechanical Damage: Lip seals preferably be stored in place other than a work area to avoid possible mechanical damage by equipment or falling objects. A closed container will provide protection from mechanical damage, as well as from dust, grit and other contaminants. When cartoons of lip seals are stacked, care taken to avoid damage to the bottom parts due to excessive weight.
d) Radioactive materials: Seals shall be protected from radioactive materials and certain fumes which can also cause deterioration of seal element.
e) First in first out (FIFO): Seals shall be stored on a "first in, first out" basis, since, even under ideal conditions, an unusually long shelf-life may cause deterioration of element materials.
f) Insects and rodents: Seals shall be protected from insects and rodents, some of whom thrive on rubber products.
g) Packaging: The product shall be protected from damage and foreign material enroute from the manufacturer to the user and during storage. Seals shall not be removed from their packaging until they are ready for installation; this will ensure protection and identification. During unpacking, care shall be exercised so as not to cut or tear the seal element with sharp instruments, such as knives, screwdrivers, etc., brought about by improperly unpacking bulk packs, roll packs, and individually wrapped or boxed packs.
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