What is Spiral Seal? Areas of Use and Advantages

Spiral Gaskets: What They Are, Where They Are Used, and Their Advantages

Spiral gaskets are an important type of gasket used to ensure sealing in mechanical and industrial applications. They provide a reliable sealing solution, especially in systems operating under high pressure and temperature. So, what exactly is a spiral gasket, where is it used, and what are its advantages? Let’s take a closer look.

What is a Spiral Gasket?
A spiral gasket is a sealing element made from a combination of metal (usually stainless steel or other alloys) and soft filler materials (such as graphite, PTFE, mica, etc.). As the name suggests, it has a spiral-wound structure. This design allows the filler material to compress under the pressure applied to the gasket, ensuring effective sealing.

Applications of Spiral Gaskets
Spiral gaskets have a wide range of uses. The main industries and applications include:

• Petrochemical and Refineries: Used in pipelines, valves, and pressure vessels operating under high pressure and temperature.
• Power Plants: Provides sealing in steam turbines, boilers, and heat exchangers.
• Natural Gas and Pipelines: Preferred in systems transporting pressurized gas and liquids.
• Chemical Industry: Used in reactors and pumps due to its resistance to corrosive chemicals.
• Marine and Shipping Industry: Commonly used in maritime applications because of its resistance to saltwater and high pressure.

Advantages of Spiral Gaskets

Flexible Structure: The spiral design allows better conformity to the sealing surface, enhancing leak prevention.

Reusability: Some types of spiral gaskets can be disassembled and reused, offering cost advantages.

Resistance to High Pressure and Temperature: The metal spiral structure is resistant to extreme pressure and temperature variations.

Long Service Life: More durable than traditional gaskets and requires less frequent replacement.

Chemical Resistance: Special filler materials protect against acids, bases, and other corrosive chemicals.