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In
addition to the physical
properties discussed in the preceding
section, there are also a couple of very important
chemical properties you should consider when
choosing an elastomeric compound.
Primarily, the compound must be chemically compatible
with the substance(s) to be sealed. You must
also anticipate any volume changes that the compound
may undergo as a result of contact with system
fluids.
COMPATIBILITY
VOLUME CHANGE
ENVIRONMENTAL FACTORS
CHEMICAL
COMPATIBILITY GUIDE
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“Because ‘likes
dissolve likes,’ the true key to compatibility
between the seal and the fluid(s) being sealed
is dissimilar chemical structure.”
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