The Rotary (R.E.) Union is a self contained, self supporting rotary seal for the leak proof transfer of fluids (such as steam, water, air or oil) to and from rotating machine shafts. The type of Rotary Seal fitted to the Rotary (R.E.) Union is a “FILTON BELLOWS SEAL” containing a flexible stainless steel bellows which is self adjusting, eliminating the maintenance common with conventional packed glands. Rotary sealing is created by relative rotation between extremely flat sealing faces (items 2 and 4) held in contact by the spring characteristic of the bellows with an additional sealing force created by pressure of the fluid passing through the Rotary (R.E.) Union. The bearings fitted to the Rotary (R.E.) Union are standard ball bearings which are given their initial lubrication before despatch.
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