What Kinds Of Spiral Wound Gaskets Are Available? - Trim Engineering Services

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Spiral wound gaskets are those that comprise of a
mix of metal and filler material wherein a
metallic ring that is normally carbon rich or
stainless steel is wound around a filler
material that is probably flexible graphite.
Here, the winding sides of the metal and filler
material are opposite to each other. This results
in alternating layers of metal and filler
material. Hence, the filler acts as a sealing
element, while the metal provides structural
support. These gaskets are generally circular in
shape, but are available in other shapes too.
Trim Engineering Services is one of the most
reliable spiral wound gasket manufacturers in
India providing gaskets that offer utmost
strength and resiliency with the metal, while
the filler material provides conformability and
seal ability. The materials used for
constructing spiral wound gaskets are selected
based upon various factors like operating
temperature, corrosive nature, fluid
concentration, and material cost. Trim
Engineering Services generally uses Carbon Steel
or Stainless Steel 304, 316, and 321 for the
metallic part and Graphite or Asbestos for the
filler material. Spiral wound gaskets are
designed for the widest range of operating
conditions of pressure and temperature. They are
used for high temperature and high pressure
applications. They are used on raised face,
male-and-female, and tongue-and-groove flanges.
They have
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proven to be reliable in most applications,
allowing lower clamping forces than solid
gaskets, although at a higher cost. Now, let us
learn about the various types of spiral wound
gaskets available. Style CG These gaskets
utilize an external ring that accurately centers
the gasket on flange face, and provides
additional radial strength that acts as a
compression stop, and prevents gasket blowout.
They are suitable for use with flat face and
raised face flanges. Style CGI These are CG
style gaskets fitted with an internal ring that
gives additional compression limiting stop, and
provides a barrier to heat and corrosion thus
protecting the windings of the gasket and
preventing flange erosion. In flat and raised
face flanges, these gaskets feature increased
compressive force for blow-out prevention. They
are used in high pressure and high temperature
applications, and where corrosive or toxic media
are present. Style HE These are gaskets used
for heat exchangers where pass bars are required.
The outer ring is similar to a standard spiral
wound construction, while the rib portion is
single or double jacketed, securely fastened to
the ID of the spiral wound portion. These gaskets
are most commonly specified for shell and tube
heat exchangers with TEMA flange. Style
HE-CG Identical to Style HE gaskets, the
exception is that it has an outer ring on the OD,
which acts as a centering guide and provides
additional radial strength to prevent gasket
blow-out, and also acts as a compression
stop. Style R Here, the inner and outer
diameters are reinforced with several metal plies
without filler material, to give greater
stability, better sealing, and better
compression. Working as a sealing element only,
these gaskets are most suitable for
male-and-female, tongue-and- groove, and
grooved-to-flat flange assemblies. Style
RIR These gaskets have a solid inner metal ring
that acts as compression stop and fills the
annular space between flange bore and inside
diameter. They are designed to reduce
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turbulent flow of fluids, prevent accumulation of
solids, and minimize erosion of flange faces.
Just like Style R gaskets, these gaskets also
have inner and outer diameters reinforced with
metal plies without filler material. Style
HX-RIR These are Style RIR gaskets that are
developed for use on heat exchanger TEMA type
flange arrangements. Along with an inner ring,
the standard construction supports an outer
wound steel nose, designer for accurate gasket
location. Carrier ring These gaskets consist of
two spiral wound gasket seals dug into each face
of a metallic core. They have high recovery
characteristics and increased strength and hand
ability, as compared to standard configuration
gaskets. These gaskets are used in high pressure
and high temperature applications, and on
flat-faced, raised-face and tongue-and-groove
type flanges. Stay Social with us on Facebook,
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