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Sealing types refer to various methods and materials used to create a barrier against leakage or unwanted entry. These are crucial in numerous applications to maintain integrity, prevent contamination, and ensure safety.

Common types include mechanical seals, which use rotating and stationary parts to create a seal around a shaft. Gaskets are another prevalent type, typically made of compressible materials like rubber, cork, or paper, used to fill the space between two mating surfaces, preventing fluid or gas escape. O-rings, a specific type of gasket, are toroidal sealing rings with a circular cross-section.

Adhesive sealants are used to bond surfaces and create a seal simultaneously, often employed in construction and automotive industries. Lip seals are a type of mechanical seal characterized by a flexible lip that presses against a shaft or housing. Packing, often found in pumps and valves, consists of soft material wound around a shaft or stem to form a seal.

The choice of sealing type depends heavily on factors such as the operating environment, pressure, temperature, the nature of the substances being contained, and the required lifespan of the seal. Each type offers distinct advantages and disadvantages in terms of cost, effectiveness, and ease of installation.