Spiral Wound Gaskets are suitable for
a wide range of operating conditions
and can be adapted to suit almost all
applications. The gaskets can seal fluid
pressures up to 250 bar and temperature
range of -200°C to in excess of 450°C.
All RS and RSI gaskets
for standard flanges
have a 4.5mm thick
sealing section of
windings and filler
material, with 3.2mm
thick solid metal
The standard gasket choice for RF and FF flanges, with the guide
ring and sealing element made to ASME B16.20/DIN standards.
The standard RS style with an extra inner ring fitted, providing an
additional compression stop that protects the sealing element
from heat and corrosion.
Inner rings are standard on all gaskets NPS24" class 900#, NPS12" and above in 1500#, and NPS4" and above in 2500#. All spiral
wound gaskets with PTFE filler material have inner rings fitted.
Style S gaskets are a sealing element only with a few additional
layers of winding strip for use in tongue and groove and male/
These gaskets are also available in oval, obround
and diamond shape for valve bonnet and handhole applications.