Diaphragms are flexible sealing element components that are used in pump, valve, and diaphragm seal applications. They provide a barrier between two chambers. Diaphragms move slightly up into one ...

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A popular Roman writer advocated abstinence. "Womb veils," a 19th-century phrase for diaphragms cervical caps, and condoms, often made from linen or fish intestines, have been in use for centuries.