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Econo-Flex™
/ Flex-A-Seal™ Secondary Wiper Seal
The HMT Econo-Flex Secondary Seal is among the most
economical and effective types of secondary seals
available. Easily installed and maintained, the
Econo-Flex Secondary Seal's ability to meet or exceed
stringent gap specifications for secondary seals has
earned their approval from governmental regulatory
agencies throughout the U.S., including Northern
California's BAAQMD and their "zero-gap" requirements.
Designed to be installed with the tank
in service, the Econo-Flex Secondary Seal is engineered
to adapt to virtually every type of external floating
roof design, accommodating wide variatins in annular
rim space, and compatible with various types of
primary seals and rim connections. Each Econo-Flex
Secondary Seal is custom designed to fit a specific
tank's characteristics. This assures that each
seal will maintain a tight fit against the tank shell,
all around the circumference of the floating roof, and
at all operating roof elevations.
The Econo-Flex Secondary Seal, with
it's wide range of vapor barrier fabrics, combined with
a Buna/Nitrile PVC blend tip, assure a highly effective
seal for a wide range of products and service
conditions. Available in either galvanized or
stainless steel, the Econo-Flex Secondary Seal combines
economy with reliability and durability.
HMT has been designing, fabricating
and installing seals on Aboveground Storage Tank
floating roofs for many years. The Econo-Flex
Secondary Seal has "field-proven" it's effective sealing
capability and long service life, while offering an
economical choice in Secondary Seals.
Design Features:
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In-Service installation
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Accommodates wide range of rim space variations
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Shunts for dissipating static electricity
installed above seal upon request
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Wide range of metallic and non-metallic
materials available for various service conditions
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HMT's PTFE Laminated Fluropolymer (Teflon®)
vapor barrier fabric available
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Seals will return to tank without special
attention, if tank is overfilled
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Superior fire snuffing ability, in the event of
lightning strike
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Foam flow openings available
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Rim mounts for vertical or horizontal attachment
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Custom designed for each tank
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Easily installed and maintained
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Long Service life
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Designed reduces product contamination from
rainwater, condensation and airbonre contaminants
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Approved by Northern California's BAAQMD,
meeting their stringent "zero-gap" requirements
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