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About product and suppliers:
        Alibaba.com offers 11,992 rotary union products. About 24% of these are pipe fittings, 1% are other general mechanical components. 

A wide variety of rotary union options are available to you, such as coupling, union, and cap. You can also choose from copper, carbon steel, and stainless steel. As well as from casting, forged. And whether rotary union is male, flange, or female. 

There are 11,978 rotary union suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and South Korea, which supply 97%, 1%, and 1% of rotary union respectively. 

Rotary union products are most popular in Southeast Asia, North America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 3,141 with ISO9001, 347 with Other, and 211 with ISO14001 certification.