SKF Mechanical Seal Device and Analysis

Source: Bearing Network | Time: 2013-06-17

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The SKF mechanical seal is a reliable sealing solution designed for various industrial applications. It consists of two identical seal rings and two similar nitrile rubber Belleville washers. The seal rings are manufactured from high-quality, wear-resistant, and corrosion-resistant steel, ensuring long-lasting performance. These components feature a precision finish that allows them to slide smoothly and maintain an effective seal, even when handling thin oils such as SAE 10W40. The nitrile rubber Belleville washers, also known as cup-shaped springs, provide the necessary uniform surface loading, ensuring excellent sealing between the inner and outer diameters of the device. One of the key advantages of this design is that it doesn't require special attention to the external surface finish, making installation more straightforward. The SKF mechanical seal is supplied as a gland assembly, ready for immediate installation. A special retaining ring holds the outer surface of the seal ring in place, simplifying the installation process and protecting the seal from potential damage. This retaining ring is positioned behind the seal and remains in place during initial operation, offering additional protection to the sliding surface. Over time, the retaining ring will gradually wear down but continues to serve its protective function. These mechanical seals are ideal for use under strict operating conditions at relatively low peripheral speeds. They effectively prevent the intrusion of solid and liquid contaminants while maintaining a secure seal with the lubricant, ensuring no leakage occurs. Originally developed for both traveling and crawler vehicles, these seals have since proven to be versatile and suitable for a wide range of applications where exposure to sand, soil, water, and other harsh elements is common. Applications include, but are not limited to, various types of mixers, sand disposal equipment, transporters, construction machinery, agricultural equipment, scrubbing systems, mills, grinding machines, mineral processing equipment, and mining tools. Installation of the SKF mechanical seal does not require special tools. To make the process easier, it is recommended that the inner hole of the bearing housing has a chamfered repair kit to guide the seal into place. In some repair scenarios, only the gasket may need replacement, while the seal ring can be reused. The repair kit typically includes a replacement gasket, detailed installation instructions, and two pieces of lint-free cloth for cleaning the seal ring before reinstallation.
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