As they age, shaft seals and other rubber products can undergo changes in physical properties. They may even become unusable due to excessive hardening, softening, cracking, crazing, or other surface degradations. These changes may be the result of a single factor or a combination of factors, such as the action of oxygen, ozone, light, heat, humidity, oils, water, or other solvents. Detrimental effects can be minimized, however, by proper storage conditions (such as those outlined in this section). As shown in Figure 47, we make it a priority here at R.L. Hudson & Company to maintain these proper conditions in all of our warehouse facilities.

TEMPERATURE
HUMIDITY
LIGHT
OXYGEN & OZONE
DEFORMATION
SHELF LIFE
STORAGE