What is CG and CGI gasket?
Style CG – Is comprised of a sealing element and outer metal ring. Style CGI – In addition to an outer metal ring the CGI style gasket is fitted with an inner metal ring, constraining the sealing element on both internal and external diameters.
What are spiral wound gaskets used for?
What are Spiral Wound Gaskets? A Spiral Wound Gasket is the most common metallic gasket used in industrial plants. A properly selected and installed spiral wound gasket can withstand high temperatures and pressures, preventing leaks throughout their intended lifespan.
What is flexitallic gasket?
The Flexitallic Spiral Wound Gasket is the precision-engineered solution for flanged joints, heat exchangers, boiler handholes, manholes and other high temperature, high pressure applications—providing resistance to virtually every known corrosive and toxic element.
What is a CGI spiral wound gasket?
The CGI spiral wound is the new standard spiral wound gasket per ASME B16. 20 and is required unless otherwise specified by the user. The CGI is a CG style spiral wound fitted with an internal ring which gives an additional compression limiting stop and prevents inward buckling ring.
What is CGI gasket?
The CGI spiral wound is standard spiral wound gasket per ASME B16. 20 . The Style CGI is for use with flat face and raised face flanges. This gasket features increased compressive force for blow-out prevention and is specified for high pressure/temperature service or where corrosive or toxic media are present.
What is ring type gasket?
A ring-type gasket is placed and installed inside of the flange bolts and around the pipe bore. It has no bolt holes and is typically used on raised face flanges since it can easily sit right on top of the flange. Due to its composition, it can be installed without disassembling the joint.
How does a spiral wound gasket work?
Edge Sealing Pretty quickly the material reaches the limits of what it can do. In contrast, the spiral wound gasket seals on its edges rather than a flat surface. To do this a long thin strip of gasket material is coiled up to create a ring. Placed between flanges, it’s the sides of the strip that make the seal.
What is a spiral gasket?
A spiral wound gaskets is categorized as semi-metallic gasket that is typically used for high pressure applications. The sealing element is formed by winding two materials (one for sealing, one for resilience) into thin v-shaped spirals.
What is a Cnaf gasket?
CNAF gaskets are made from sheet material where the fibres are combined with a rubber binder which is normally Nitrile, EPDM, Neoprene or SBR. It is important to select the right grade, as unlike asbestos, CNAF materials have different chemical resistance and temperature ratings dependent on the grade.
Can flexitallic gaskets be reused?
This type of gasket consists of a grooved metal plate with a process-compatible sealer filling the groove. Under load, the material in the groove compresses and seals the process. With proper maintenance, which includes sealer reapplication, these gaskets can be reused.
Can spiral wound gaskets be reused?
Spiral-wound designs have layers of V-shaped metal and gasket material wound to create a gasket. With proper maintenance, which includes sealer reapplication, these gaskets can be reused.
How big is a spiroflex spiral wound gasket?
Spiroflex gaskets can be produced in all sizes from DN 10 to a diameter of four metres. However, from a sealing technology point of view, grooved gaskets are recommended for use at diameters above 1000 mm.
What kind of filler do you use for spiroflex gaskets?
Spiroflex gaskets SpV retain the same filler strip throughout. Common filler materials include graphite, sintered or unsintered PTFE and mica. Spiroflex gaskets SpV are only suitable for flange connections below PN 25 where there are sufficiently high bolt loads available.
What kind of filler does a SPZ gasket use?
Spiroflex gaskets with sealing zone Profile SpZ have the same filler strip inside and outside and a PTFE filler strip in the middle area. Spiroflex gaskets SpFS in the “Fire Safe” range have unsintered PTFE filler strips on the inside and graphite filler strips on the outside.
What kind of springs do spiroflex make?
SPIROFLEX is a UK based manufacturer of constant force springs, power springs and assemblies incorporating these springs. With a wide range of standard parts.Additionally we stock and supply components for textile machines. Extension springs can maintain constant force throughout their working extension, or can be made to give a variable force.