X-ray analytical instrument manufacturer Rigaku Corporation sold its Rigaku Vacuum Products division and established as the independent company, Rotary Vacuum Products, Inc., a New Hampshire corporation headquartered in Salem.

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A rotary feedthrough is a specialized part that acts as a sealing device, preventing leakage of liquids or gases. Magnetic rotary feedthrough seal units introduce rotary motion into vacuum or differential pressure environments. Rigaku Vacuum Products supplied “magnetic seals” - vacuum rotary feedthroughs with magnetic fluid - for modern vacuum systems and other process systems.

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Rotary Vacuum Products has continued with the design, manufacture, sales and repair of magnetic rotary feedthrough seal units  for customers in the United States and European Union region. 

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Products Include:

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• Hollow shaft and solid shaft rotary feedthroughs

• UHV feedthroughs

• Direct drive seals

• Ferrotec replacements

• Custom feedthroughs

• Feedthrough repair services

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