Overview: Bellows Seals
Mechanical seals with bellows technology have various benefits and applications. Edge welded bellows technology allows for a variety of materials including stainless steel, Inconel®, and Hastelloy®. With these options, various liquids and gases can be measured as well as extreme temperatures.
Bellows mechanical seals can eliminate O-rings to increase compatibility and reduce potential leak paths. The metal bellows design allows for higher flow rates and less clogging than traditional spring seals. Bellows seal technology creates a uniform outside wall for uniform movement under hydraulic pressure.
With precision stamping and proprietary welding techniques, BellowsTech manufactures its edge welded bellows within tight tolerances in its Ormond Beach, Florida facility. Bellows mechanical seals can be manufactured with O-ring grooves, flanges, and carbon-face seals to make the best possible connection to customer assemblies. BellowsTech mechanical seals are 100% visually inspected throughout the manufacturing process and confirmed with mass spectrometer testing. BellowsTech can offer various sizes and stroke lengths to satisfy custom demands. Applications in the aerospace, oil, gas, petrochemical, pharmaceutical, water and paper industries are common markets for bellows mechanical seals, due to their reliability, tight tolerances, and compatibility with harsh media in pump systems.
Specifications – Bellows Mechanical Seals – PDF
|Common Materials||AM350, 316L SS, Inconel®, & Hastelloy® 276C|
|Thickness||0.002″ and up every 0.001″|
|Standard Leak Rate||<1×10-9 std CC He/sec**|
|Outside Diameter||0.358″ (9.0932mm) to 22.205″ (564mm)*|
|Inside Diameter||0.198″ (5.029mm) to 19.921″ (505.99mm)*|
|Shapes||Round standard. Non-Round Available; Contact Factory.|
|Length||Up to 96 inches (244 cm)|
* For other dimensional requirements, contact the factory
** Confirm leak rate with material selected.