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About product and suppliers:
        Alibaba.com offers 10,887 rotary union products. About 26% of these are pipe fittings, 1% are other general mechanical components. 

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

There are 10,834 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 2,669 with ISO9001, 351 with Other, and 183 with ISO14001 certification.