Shaft seal PAULSTRA

An element forms a sealing function when it prevents the passage of a fluid from a one enclosure to another. Such elements are called "Seals".

If the object is to prevent the flow of a fluid from an enclosure into a neighbouring enclosure, the seal is called a Single Seal. If the seal must prevent the flow of another fluid which may be in the second enclosure into the first, the seal is called a double seal.

If the two mechanical parts between which the leakage is likely to occur are fixed with relation to each other, the seal is called static seal. If one or both of these parts is moving relative to the other, the seal is called a dynamic seal.

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