What is the industry standard color for a 304 stainless steel spiral wound gasket?
Yellow
Spiral Wound Gaskets: Temperature, Colour Codings and Markings
| Material Winding/Plate | Max Temperature | ASME B16.20 Colour Coding |
|---|---|---|
| 304 Stainless Steel | 540°C | Yellow |
| 316L Stainless Steel | 800°C | Green |
| 321 Stainless Steel | 870°C | Turquoise |
| 347 Stainless Steel | 870°C | Blue |
Where do you place a spiral wound gasket?
Although these spiral wound gaskets are used in applications where high temperature and high pressure are seen, but they can also be used in low temperature applications like in cryogenic facilities, chemical plants, and research laboratories, where low temperature storage solutions and subsidiary equipment coolant …
Can you use spiral wound gaskets on flat face flanges?
Style CGI spiral wound gaskets are suitable for use on flat-face and raised-face flanges, and can be specified for high-pressure/temperature service or where corrosive or toxic media are present. The inner rings of style CGI spiral wound gaskets add strength against blowout and act as a compression stop.
Why do flanges need gaskets?
Flange gaskets are designed to seal the space between two sections of pipe. Most pipes, of course, are joined at a flanged surface. The surface where two pipes join isn’t smooth or otherwise flat. Rather, it’s flanged, meaning it flares out.
When would you use a spiral wound gasket?
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.
How thick is a spiral wound gasket?
The usual nominal thickness of spiral wound gaskets are between 3,2 mm and 4,5 mm. For gaskets with a diameter no superior to 1200 mm the thickness of 4,5 mm is recommended; for the diameter up to 1800 mm – 5,5 mm. For extra large diameters (up to 4000 mm) is more recommended the thickness about 6,5 mm or 7 mm.
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 the purpose of inner ring in spiral wound gasket?
The inner ring functions as an additional compression stop and prevents inner buckling of the sealing element. It also creates a physical barrier between the sealing element and process stream shielding from heat and media while preventing erosion.
What is a spiral wound gasket?
The spiral wound gasket is semi-metallic, comprising of a spirally wound v-shaped stainless steel strip and a non-metallic filler material, such as graphite or PTFE. This protects the windings (particularly the filler), from contamination, or attack by the product travelling past the pipeline joint.
What are the three general designs of flange gasket?
In Piping Systems a Flange Gasket is placed between two connecting Flanges to create a leak proof seal. The three primary types of Flange Gaskets are Non-metallic, Semi metallic and Metal Gaskets. The Non-metallic Flange Gaskets are used in low pressure, low temperature and noncritical service applications.
How does spiral wound gasket works?
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 are the materials used in a spiral wound gasket?
Spiral wound gaskets listed below consist of 304 stainless steel winding with flexible graphite filler, and a carbon steel outer ring.
What is a spiral wound seal?
A spiral wound sealing element to ensure a positive seal under fluctuating temperature and pressure conditions. 3. A solid metal inner ring to protect the sealing element and act as a compression stop.
What type of tightening should I use when installing spiral wound gaskets?
Controlled tightening procedures should be used when installing Spiral Wound Gaskets. Flexitallic recommends that the use of hydraulic tensioning equipment be considered where possible for bolt diameters 1-1⁄ 4″ and above. Please refer to Flexitallic’s Design Criteria for further technical information.
What are CGCG-RJ and CGI-RJ spiral wound gaskets?
CG-RJ and CGI-RJ Spiral Wound Gaskets are designed for use, as a replacement maintenance item, of standard oval and octagonal ring joint gaskets. These gaskets are available for NPS ½ to 24 and pressure classes 150 to 1500. Gasket thickness is 0.175″ (4.5mm) and the outer ring thickness is 0.125″ (3.2mm).