A gasket is a common component to countless assemblies, coming in the form of a mechanical seal which may take up the space between two or more mating surfaces while under compression. As a component that may come in many diverse types, gaskets may be flexible materials that are constructed from rubber, paper, cork, or countless other substances. While featuring numerous grades that may benefit different applications, gaskets are most commonly compressed between surfaces for the means of preventing leaks, reducing noise, mitigating vibration, providing mounting support, and much more. In this blog, we will discuss gaskets and their working principles more in detail, also providing common types that may be used for varying applications.
As a malleable component, gaskets ensure a tight seal when compressed between two or more surfaces. Depending upon the application that they are implemented for, such materials may be constructed with temperature or chemical resistance, electrical protection, pressure resistance, and other properties. While being produced from numerous material types, gaskets may also follow varying designs to provide the properties needed for a particular assembly. In general, some of the most common types of gaskets come in the form of jacketed, solid, spiral wound, and Kammprofile gaskets.
Jacketed gaskets are those that are formed from a soft filler made from rubber or plastic that is covered with a metal surface along one face. Also coming in double-jacketed types, the metal surface ensures that the gasket has resistance to fluctuating temperatures, high pressures, and corrosive substances. Based on one’s particular needs, variations of jacketed gaskets include corrugated types, French style types, and more. Depending upon the variation of jacketed gasket, the metal coating may be inside or outside of the soft material.
Unlike the mix of soft and hard materials that jacketed gaskets provide, solid gaskets are simply made from metal. As an inexpensive option, such gaskets are well capable of resisting high temperatures and pressures when implemented within an assembly. As solid gaskets are constructed with metal, they require high amounts of compression to create an optimal seal and are less efficient when they are harder than the surfaces they are placed between.
Spiral wound gaskets use a mix of soft and metallic materials that are placed in a winding shape, utilizing the harder materials for reinforcement. With their specialized design, spiral wound gaskets allow for efficient sealing and flexibility while ensuring high thermal and stress resistance. In general, the common applications for such gaskets include piping, heat exchange, and plumbing systems.
Kammprofile gaskets are the final major type, featuring a corrugated metal core that is surrounded by a sealant material on each side. The design is specifically made for the means of placing all stress onto the malleable sealing surface, ensuring an optimal seal between components while also guaranteeing a strong center. As a very dependable gasket, such variations often find implementation within heat exchange systems.
Beyond the aforementioned types of gaskets, there are numerous others that may be produced from metals, rubbers, plastics, and silicone. When choosing between various components, it is very important to consider the application’s temperatures, stressors, present chemicals, and other factors that may affect the performance of different gaskets. Once a decision has been made, let the experts at Methodical Purchasing help you secure top quality components with competitive pricing and rapid lead-times.
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