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A special purpose heavy-duty rubber hose attaches the stuffing box to a stern tube, also called a shaft log, that projects inward from the hull. Marine-duty hose clamps secure the hose to the stern tube and the aft portion of the stuffing box sleeve. A sound stuffing box installation is critical to safety because failure can admit a ...
The first commercially successful mechanical seal to be used on centrifugal pumps was probably made by the Cameron Division of the Ingersoll-Rand Company. The Cameron seal was installed in a number of centrifugal pipeline pumps in 1928. [6] Mechanical seals in the 1930s often used a face combination of hardened steel versus leaded bronze.
The original Schrader valve design was invented in 1891 and patented in the United States in 1893. [2] The Schrader valve consists of a valve stem into which a valve core is threaded. The valve core is a poppet valve assisted by a spring. A small rubber seal located on the core keeps the fluid from escaping through the threads.
Hayward is a city located in Alameda County, California, United States, in the East Bay subregion of the San Francisco Bay Area.With a population of 162,954 as of 2020, [10] Hayward is the sixth largest city in the Bay Area, and the third largest in Alameda County. [12]