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Introduce:
These two gel types provide a physically compliant,
air tight seal between the HEPA filter frame and its housing.
Both contain similar characteristics in terms of elasticity, surface tack and softness and will perform the basic job of sealing HEPA filters to the air delivery system.
However there is a wider acceptance of Silicone gels in general
HEPA applications.
Silicone gels are produced by several major corporations and are
included in a range of electrical, electronic, vibration damping
and sealing applications. They are generally more resistant to
chemical breakdown and enable higher usage temperatures; but are
also relatively high in cost, and may suffer cure inhibition when
applied directly to some incompatible substrates.
Polyurethane gels are not commonly used by many HEPA filter
manufacturers. Although they are relatively low cost and offer
fairly good chemical resistance, commonly cited disadvantages
include high moisture sensitivity of the unreacted components
resulting in a limited raw material shelf-life, less resistance to
chemical breakdown and incompatibility with certain substrates that
may result in cure inhibition.
HEPA Filter Condition :
Factory test:
All of equipment is individually factory tested for safety and
performance in accordance with international Standards. Each unit
is shipped with a documentation outlining the tests undertaken and
the units individual results for each unit.
Factory test include:
-- functional test and visual inspection
-- electrical safety tests
-- air velocity testing
-- purification rank test (if need)
HEPA Air Filter Application :