Which type of sealing surface is best for corrosive and high pressure/temperature flange joints?

Ring joints are specifically designed to withstand the harsh conditions associated with corrosive environments and high temperature and pressure applications. They are typically made from high-strength materials like metal, which allows them to provide a robust sealing surface that can handle extreme pressures without deforming or leaking.

The design of ring joints features a circular cross-section that compresses evenly against the flange surfaces, creating a tight seal that prevents the escape of fluids or gases, even under significant pressure. This makes them highly reliable in critical applications, such as oil and gas pipelines, where maintaining integrity is essential for safety and operational efficiency.

In contrast, other sealing surfaces such as flat gaskets and full face gaskets are generally designed for less extreme conditions and may not offer the same level of performance under high pressure and temperature. Spiral wound gaskets, while versatile and able to handle some corrosive substances, are not as inherently strong as ring joints in applications involving severe conditions.