The difference between flanged flat gaskets, spiral wound gaskets, and oval gaskets

When it comes to creating a leak-free and reliable sealing between flange connections, the choice of gasket plays a vital role. With a myriad of options available, it’s essential to understand the unique characteristics of each gasket type to make the right selection for your specific application. In this article, we’ll delve into the differences between flanged flat gaskets, spiral wound gaskets, and oval gaskets, shedding light on their structures and distinct advantages.

ASME B16.21 Flange Gasket

Flanged Flat Gaskets:

Flanged flat gaskets, also known as full-face gaskets, are the most straightforward and commonly used gasket type. Made from soft materials like rubber, PTFE, or graphite, they offer excellent compressibility and sealing properties. These gaskets are flat in shape and cover the entire face of the flange, ensuring a broad sealing surface and easy installation.

Advantages:

Cost-effective and widely available

Ideal for low-pressure applications

Suitable for non-standard flange surfaces or applications requiring frequent disassembly

316L spiral wound gasket

Spiral Wound Gaskets:

Spiral wound gaskets are the go-to choice for high-pressure and high-temperature applications. Constructed with a V-shaped metal winding (typically stainless steel) and a soft filler material (flexible graphite or PTFE), they create a robust, resilient structure. The alternating layers of metal and filler enhance the gasket’s ability to withstand extreme conditions.

Advantages:

Excellent pressure and temperature resistance

Effective sealing in both raised face (RF) and flat face (FF) flanges

Well-suited for applications involving thermal cycling and pressure variations

OVAL GASKET

Oval Gaskets:

Oval gaskets are specially designed for applications requiring a high-pressure seal. They are often used in the oil and gas industry and are made from metals such as soft iron, stainless steel, or Inconel. Oval gaskets feature an octagonal or oval shape.

Advantages:

Superior sealing performance under high pressure and temperature

Ideal for use in extreme conditions and high-temperature applications

Require special grooves in the flange face for installation

At Haihao Group, we recognize the importance of choosing the right gasket to ensure leak-free connections and optimal performance in various industries. With our wide range of gasket options and expertise in gasket manufacturing, customers can rely on us to provide the perfect sealing solution tailored to their unique requirements. Whatever your application demands, our commitment to quality and precision ensures that you get the best gasket for the job, meeting or exceeding industry standards with ease.