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with a soft pliable core, surrounded by a metal jacket that totally or
partially encloses the filler material. Pass partition bars can be
incorporated, either integrally or welded into the gasket. Jacket may be
Metal jacketed gaskets are specially designed and widely used for heat
exchangers, autoclaves, columns, pressure vessels, flue stacks, boilers, gas
mains, valve bonnets, pumps and similar services. The gaskets are
manufactured from a soft, pliable filler core surrounded by a metal jacket,
chemically and thermally resistant to the working conditions, which may
totally or partially enclose the filler.
The majority of these types of gasket are supplied in circular form but can
be manufactured to other shapes to suit individual requirements. The method
of manufacture enables gaskets to be produced with almost no size
limitations. They are produced in different styles to API, ASME DIN and BS
Metals are only used in the annealed condition and limit
the hardness of the metal in line with international standards as shown.
Selection of the correct filler is important and as
standard we use a soft non-asbestos filler. This material is constructed
from inorganic fibre and inert fillers, suitably bonded, which produces a
material having very similar characteristics to those of asbestos millboard.
A data sheet on this material is available on request. Alternative fillers
include expanded graphite, PTFE, compressed non-asbestos fibre and ceramic