Corrugated Gaskets
Corrugated gaskets are manufactured using a thin metal sheet that has been corrugated, or ridged, to increase flexibility and resilience. These are a good choice for low to medium pressure applications and are often used with flanges that have uneven surfaces. The ridges help seal and adjust to surface imperfections. This makes them good for situations where temperature changes cause surfaces to expand and contract.
Spiral Wound
Spiral wound gaskets consist of a metal strip wound in a spiral with a filler material, typically graphite or PTFE, interweaved between the layers of metal. This design has a strong and flexible seal. It works well in high-pressure and high-temperature situations. Spiral wound gaskets are often used in oil and gas, petrochemical, and power generation industries for flanges, valves, and pumps.
Solid Metal Gaskets
Solid gaskets are cut or stamped from solid metal sheets and are used in applications requiring high temperature and pressure resistance. They are good for sealing uneven surfaces and are often used in exhaust systems, heat exchangers, and high-pressure pipes. Due to their rigidity, they require a higher clamping force than other types of gaskets to achieve an effective seal.
Single Metal Jacket
Single metal jacket gaskets consist of a soft, compressible filler material that is completely enclosed in a thin metal jacket. This design provides improved sealing capabilities and protection for the filler material, making it suitable for applications involving steam, heat transfer fluids, and mild chemicals. They are often used in heat exchangers and pipe flanges where a metal-to-metal seal is not required but protection against corrosive or abrasive media is necessary.
Two-Piece Metal Jacket
Two-piece metal jacket gaskets, also known as double-jacketed gaskets, have a soft filler material enclosed between two metal layers. This construction provides enhanced sealing performance and durability compared to single-jacketed gaskets, making them suitable for high-pressure and high-temperature applications, particularly in large flange connections found in the power generation and marine industries.
Grooved Gaskets
Grooved metal gaskets feature a metal core with concentric grooves on one or both sides, filled with a sealing material such as graphite or PTFE. The grooved design enhances the seal’s resilience and allows for better compression and recovery, making these gaskets ideal for applications with fluctuating temperatures and pressures. They are commonly used in pipeline systems, heat exchangers, and pressure vessels.
Ring Gaskets
Ring gaskets, also known as RTJ (Ring Type Joints), are solid metal gaskets designed to seal by “initial line contact” or wedging action between mating flanges. They are typically used in high-pressure and high-temperature applications, such as oil and gas production, refining, and petrochemical industries.
Each gasket type is designed to meet specific sealing requirements, taking into account factors such as pressure, temperature, media, and flange type. AMG has extensive experience in many industries and will help you select the appropriate gasket style ensuring a reliable seal and optimal system performance.
