Products description:
PTEF 600lb Graphite Filled 316l Inner Ring 316l Spiral Wound Gasket
PTEF 600lb Graphite Filled 316l Inner Ring 316l Spiral Wound Gasket
Spiral wound gaskets — made with an alternating combination of
formedmetal wire and soft fillermaterials — form avery effective
seal when compressed between two flanges.A V-shaped crown centered
in the metal strip acts as a spring, giving the gaskets greater
resiliency under varying conditions. Filler and wire material can
be changed to accommodate different chemical compatibility
requirements. If the load available to compress a gasket is
limited, gasket construction and dimensions can be altered to
provide an effective seal.
A spiral wound gasket may include a centering ring, an inner ring
or both. The outer centering ring accurately positions the gasket
within the flange and acts as a compression limiter, while the
inner ring provides additional radial strength. The inner ring also
reducesflange erosion and protects the sealing element.
Resiliency and strength make spiral woundgaskets an ideal choice
under a variety of conditions and applications. Widely used
throughout refineries and chemical processing plants, spiral wound
gaskets are also effective for power generation, aerospace, and a
variety of valve and specialty applications.
The ASME B16.20 gasket specification has been updated and changed
to a new recommended standard. The new criteria incorporates a
default to inner rings in all graphite-filled spiral wound gaskets
unless the purchaser specifies otherwise. However, a
graphite-filled spiral wound gasketwithout an inner ring will still
be stamped with and in compliance to the ASME B16.20 standard.
Products | Style | Flange | For example |
Basic type SWG | 600 | Tongue and Groove | 304/PTFE |
SWG with inner ring | 600 IR | Male and Female | 304 304/FG |
SWG with outer ring | 600 CR | Raised face Flat face | 304/ASB CS |
SWG with inner & outer rings | 600 IC | 304 304/FG CS |
SWG for heat exchanger | 600 H | Heat exchanger | 304/FG with 1 bar of DJ |
Special shape SWG | 600 S | Special | Oval |
Style | Structure | Hoop material | Filler material | Inner&outer ring material | Normal thickness(mm) |
Gasket | Inner&outer ring |
600 | Without rings | 304(L);316(L) 321;317L 31803 Monel, Ti,Ni INC Hast.C/B Zr702 etc. | Graphite, PTFE, Asbestos Non-asb Mica, etc | CS, 304(L), 316(L), 321;317L 31803 Ti,Ni INC Hast. Monel, Zr702 | 3.2 4.5 (0.175¡±) 6.4 | 2 3 (1/8”) 4 |
Basic Type:
Basic type gasket: inner and outer diameters are reinforced with
several piles of metal without filler to give greater stability and
better compression characteristics.
Suitable for tongue and groove, male and famale or grooved to flat
face flange essemblies.
Inner Ring Type:
Solid inner metal ring acts as a compression stopper. To prevent
accumulation of solids, reduce trubulent flow of process fluids and
minimize erosion, damages of gasket between flange bore and the
inside diameter, the annular space is filled up by solid inner
metal ring;
Suitable for male and female pipe flanges.
Outer Ring Type:
Solid outer accurately locates the gasket on the flange face to
give the additional radial strength to prevent gasket blowout and
acts as a compression limiter. In case of installing the outer
ring, it is very easy to install the gasket to flange face because
the end of outer ring will touch at bolts;
Suitable for use with flat face and raised face flanges. For class
900 and above an internal ring is recommended.
Inner & Outer Ring Type:
An inner ring and outer ring type gasket will give an additional
compression limiting stopper for gasket inner and outer side. It
will prevent the corrosions on flange face at annular space;
Suitable for use with flat face and raised face flanges and
specified for high pressure and temperature service, Class 900 and
above or where corrosive or toxic media are present.
Application Scope
The flange joints of pipelines, valves, pressure vessels,
condensers, heat exchangers, towers, manholes and hand holes in
petroleum, chemical industry, metallurgy, electric power, ships,
machinery and other industries are sealed.
Use of:
the use of Temperature: -196 ° C -650 ° C (Oxidation medium does
not exceed 450 ° C)
the use of pressure ≤ 25MPa
gasket thickness :2.5-4.5 mm
Performance:
1, the scope of application-Canton. Can high temperatures, high
pressure and adapt to ultra-low-temperature vacuum or
use.
2, the ability of compensation. At high temperature, high pressure
fluctuations frequent-position, the sealing performance
stability and reliability.
3, a good sealing performance.
4, the use of the installation convenience
