Metal Gaskets
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carry: Garlock |
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Spiral Wound Gaskets:
Spiral wound
gaskets — made with an alternating combination of formed metal wire and
soft filler materials — form a very effective seal when compressed between
two flanges. A v-shaped crown centered in the metal strip acts as a
spring, giving 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 centers the gasket within the flange and acts as a compression limiter, while the inner ring provides additional radial strength. Th inner ring also reduces flange erosion and protects the sealing element.
Resiliency and strength make spiral wound gaskets and 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.
Features of Spiral Wound Gaskets:
- Durable and easy to install.
- Seals pressures to 3000 psi.
- Suited to temperatures from cryogenic to 2000°F.
- Guide ring simplifies centering of sealing element on the flange
face and prevents blow-outs.
- Custom tailored solutions accommodate a variety of conditions by combining various metals and filler materials.
Heat Exchanger Gaskets:
A great
many styles of heat exchanger and metal clad gaskets are available. Among
the most requested styles are double jacketed gaskets, corrugated gaskets,
solid style gaskets and Energized Metallic Seal gaskets. The EMS gasket
combines the protective covering of a metal jacket with the strength and
resilience of a spiral wound gasket.
All spiral windings are available with or without partitions that are welded to the winding. Spiral windings also are available with inner and outer rings with welded partitions.
Jacketed Gaskets:
A great many
styles of jacketed gaskets are available. Among the most requested are the
single jacketed, the double jacketed, the single jacketed overlap, the
double jacketed corrugated, and the double jacketed corrugated with
corrugated metal filler.
Single Jacketed
Generally used
where the radial dimensions of the equipment sealing surfaces only allow
space for a narrow width seal. Single jacketed gaskets are constructed by
encasing the soft filler material on one face and both edges.
Double Jacketed
The double jacketed gasket has good
compressibility and resilience and is the most popular clad gasket
manufactured.
Single Jacketed Overlap
Construction of this gasket offers more filler protection than
the standard single jacketed design. It is especially useful for
applications where the radial dimensions do not allow space for a double
jacketed gasket.
Double Jacketed Corrugated
This
gasket employs a corrugated jacket to increase resilience. It is suited
for circular and non-circular applications in widths of 3/8" and wider. If
slight leakage should occur across the primary seal at the inner edge of
the gasket, the concentric corrugations act as labyrinth seals.
Double Jacketed Corrugated with Corrugated Metal
Filler
This unique multi-ply construction
provides a more resilient gasket that adapts well to temperature and
pressure cycling problems. The temperature limits of this gasket are
governed only by the metal selected.
Call or email to get the right metal gaskets for the required applications. Our knowledgeable salespeople will be happy to help you.
Phone: (713) 920-2030 Fax: (713) 920-1733 (800) 820-HOSE
e-mail: nationalhose@nationalhose.com
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