Spiral wound gaskets are a type of sealing element used in various industrial applications to prevent leakage between two connected flanges. These gaskets are particularly effective in environments with high temperature, pressure, and corrosive conditions. Here are the key features and components of spiral wound gaskets:
Structure:
Spiral wound gaskets consist of alternating layers of metal and filler material. The metal typically used is stainless steel, while the filler material is often a flexible graphite or a non-asbestos material.
Construction:
The gasket is manufactured by winding a metal strip and filler material in a spiral fashion. This winding creates a V-shaped profile.
An outer ring made of metal may be added to provide additional strength and to center the gasket within the flange assembly.
Flexibility:
The spiral wound design provides flexibility, allowing the gasket to adapt to flange irregularities and variations in temperature and pressure.
Sealing Properties:
The combination of metal and filler material creates a gasket with excellent sealing properties, making it suitable for applications where a tight and reliable seal is crucial.
Applications:
Spiral wound gaskets are commonly used in industries such as petrochemical, chemical, oil and gas, power generation, and others.
They are ideal for applications involving high temperatures, pressures, and corrosive media.
Temperature and Pressure Range:
Spiral wound gaskets can withstand a wide range of temperatures and pressures, making them versatile for different industrial environments.
Advantages:
Excellent resilience and recovery properties.
High integrity sealing even in challenging conditions.
Suitable for use with a variety of fluids and gases.
Long-lasting and durable.
Installation:
Proper installation is crucial for the effectiveness of spiral wound gaskets. It involves aligning the gasket correctly between the flange faces and ensuring proper bolt torque during assembly.
Standards:
Spiral wound gaskets are often manufactured according to industry standards such as ASME B16.20 for the petrochemical industry.
In summary, spiral wound gaskets are engineered to provide a reliable and durable sealing solution in demanding industrial settings. Their design allows them to perform well under extreme conditions, making them a popular choice for critical applications where maintaining a secure and leak-free seal is essential.