Introduction:
Ring joint gaskets are high-integrity, solid metal sealing components engineered for high-pressure and high-temperature environments, typically used in oil and gas, petrochemical, and power applications. Designed to fit machined grooves on flange faces, these gaskets seal through controlled, plastic deformation when tightened, creating a tight, reliable metal-to-metal seal.
Key Characteristics and Types
Material: Manufactured from various metals (e.g., soft iron, stainless steel, alloy steels) that are softer than the flange material to prevent damage to the flange grooves.
Sealing Principle: The gasket sits in a groove and is compressed upon bolting, with the seal strength increasing alongside process pressure (self-energized).
Shapes: The two most common configurations are Oval (original, adaptable to older round-bottom grooves) and Octagonal (higher sealing efficiency for flat-bottomed grooves).
Product application:
Oil and Gas Production: Ring joint gasket used in wellheads, xmas trees, choke-and-kill manifolds, and blowout preventers.
Process Industry: Employed in piping systems, reactors, heat exchangers, and pressure vessels, especially within refineries.
High-Pressure Piping: Suitable for systems with high pressure and potential for vibrations or thermal cycling.