Page 5 - FlexitallicCatalog2010

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Style CG
Utilizes an external ring which accurately
centers gasket on flange face, provides
additional radial strength to prevent gasket
blow-out and acts as a compression stop.
A general purpose gasket suitable for use
with flat face and raised face flanges up to
and inclusive of class 2500.
Above class 600 an internal ring is
recommended
Style CGI
A Style CG gasket fitted with internal ring
which gives an additional compression
limiting stop and provides heat and
corrosion barrier protecting gasket windings
and preventing flange erosion.
Suitable for use with flat face and raised
face flanges and specified for high
pressure/temperature service - class 900
and above or where corrosive or toxic media
are present.
Style R
Basic construction type. Inner and outer
diameters are reinforced with several plies
of metal without filler to give greater stability
and better compression and sealing
characteristics.
Suitable for tongue and groove or male
and female or grooved to flat face flange
assemblies.
Style RIR
Solid inner metal ring acts as a compression
stop and fills the annular space between
flange bore and the inside diameter of the
gasket. Designed to prevent accumulation
of solids, reduce turbulent tlow at process
tlulds and minimize erosion at flange faces.
Suitable for male and female pipe flanges.
GASKET SELECTION
What style of gasket should I select?
Style CG
Style RIR
Style R
Style CGI
SELECTION GUIDE
Flange Face
Recommended
Gasket Style
Recommended
Gasket Style
For high pressure/
temperature duty,
also for gaskets with
PTFE filler, corrosive or
fluctuating pressure or
temperature service
conditions.
*NOTE
It is essential that Style R gaskets operate with a
compression stop. without a correctly dimensioned
stop the gasket con easily be overcampressed resulting
in failure. To provide a compression stop the depth of
the tongue, groove or recess is controlled to provide
optimum compressed gasket thickness with metal to
metal contact at the flange faces (see Page 25,
Table 16).
Published as an indication of which Flexitallic Spiral wound Gasket best suits
different pipe flange Configurations and service conditions.