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A coupling sleeve, also known as a hydraulic adapter or coupling, serves as the connecting bridge between hydraulic hoses, pipes, or fittings. It is designed to facilitate secure, leak-proof connections, ensuring the smooth flow of hydraulic fluid within the system. The percentage symbol in coupling sleeve in web-based contexts is simply a URL encoding for the space character, but it underscores the importance of clear communication in technical specifications.

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Another significant benefit lies in their safety. Since they do not use electrical currents, there is a reduced risk of electric shock, which is especially crucial in hazardous environments such as oil rigs or mines. Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are produced Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are produced Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are produced Additionally, the use of compressed air allows for a cleaner working environment, as no oil or fuel emissions are producedpneumatic drilling machine.

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