Product Description
Alternative to:
CRAN: B9B/B9BT
A p p l i c a t i o n s
Type 9B Seals are standards for use
where expensive and corrosive liquids
are being processed. Wedge construction
of the secondary sealing element virtually
eliminates leakage. All components are
held together by a snap ring in a unitized
construction design which eases
installation and removal. Hydropad seal
versions available.
For extremely corrosive, high pressure
fluid applications, such as sulphuric,
nitric, phosphoric or hydrochloric acids.
Compact design permits use in all types
of rotating equipment, such as
centrifugal pumps, mixers and agitators.
Lapping process results in high
precision finish with optimal flatness.
For use in chemical processing, food
processing, offshore, oil and refinery,
petrochemical processing, power
generation, pulp and paper and
wastewater industries.
Seals can be repaired easily on-site or
at any John Crane Seal Rebuilding
Center and/or converted to O-ring
seals.
O p e r a t i n g C o n d i t i o n s
Temperatures:
9B: -212˚C to +400˚C/
-350˚F to +750˚F
depending on
materials used
9BT: -29˚C to +260˚C/
-20˚F to +500˚F
depending on
materials used
Pressures: Up to 52 bar g/750 psig
with positive hydraulic
balancing
See Chart 3 for
operating pressures.
See Chart 8 for
hydrostatic pressures.
Speeds: 25 m/s /5000 fpm
Audited Supplier 
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