What is a mechanical seal?
A mechanical seal (also known as a face seal) is a dynamic sealing element used in rotary machines equipped with a rotating shaft passing through the device housing (or when the rotating housing revolves around a stationary shaft). The principle of operation involves using two contacting friction surfaces: one installed on the rotating part, typically mounted on the shaft, and the other on a stationary part, mounted in the machine body (or vice versa). The rings are tightly pressed together by applying clamping elements (one or more springs), and during rotation, they prevent the pressurized medium from leaking into the electrical components of the device, such as windings.
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A mechanical seal (also known as a face seal) is a dynamic sealing element used in rotary machines equipped with a rotating shaft passing through the device housing (or when the rotating housing revolves around a stationary shaft). The principle of operation involves using two contacting friction surfaces: one installed on the rotating part, typically mounted on the shaft, and the other on a stationary part, mounted in the machine body (or vice versa). The rings are tightly pressed together by applying clamping elements (one or more springs), and during rotation, they prevent the pressurized medium from leaking into the electrical components of the device, such as windings.
Selecting a Mechanical Seal
The seal is selected based on the type of seal construction (bellows, spring, compact) and the type of fluid being pumped (e.g., water, oil, wastewater). To ensure the correct selection of a seal, it is important to accurately measure the following elements:
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DShaft diameter in mm
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L3Length of the rotating part installation (L3)
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D7Diameter of the stationary ring measured across the elastomer (D7)
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L4Height of the stationary ring measured from the friction face to the end of the elastomer (L4)
Mechanical Seal RIS
