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Metal Bellow Seal

Material

Seal Face:

Secondary Seals:

Metal Parts:

Carbon, Ceramic, TC,Silicon Carbide

Viton / PTFE / Graphite

SS 316 / Hastelloy

Operating Limits

Pressure:

Temperature:

Speed:

Sizes:

15 bar

-50°C to 350°C

3000 rpm

10mm to 100mm

Product Description

Welded Metal Bellow Seals are widely utilized in demanding environments involving high temperatures and aggressive, corrosive media, owing to their dependable performance and suitability for applications requiring high start-up torque. Their reliability in such conditions stems from the bellows design, which transmits torque independently, without relying on conventional mechanisms.

A key feature that sets these mechanical seals apart is the elimination of dynamic O-rings. By excluding these components, the seals prevent frictional interference or damage to the shaft and sleeve during operation—contributing to longer service life and enhanced sealing efficiency.

At the core of the design is a series of welded metal diaphragms, replacing traditional spring mechanisms. This construction provides greater flexibility at the seal face and compensates for wear over time, maintaining a tight seal even under extreme conditions. The absence of springs further enhances the seal’s adaptability and durability in high-stress, high-temperature, and corrosive environments, making it an ideal choice for critical industrial processes.

Applications

  • Commonly applied for managing highly corrosive chemical media

  • Utilized in oil refining and processing plants

  • Suitable for food and beverage processing environments

  • Ideal for fuel injection pumping systems

  • Used in wastewater transfer operations

  • Designed for sewage treatment applications

  • Compatible with thermic fluid circulation systems

  • Employed in paper and pulp manufacturing processes

Features

  • Single-face sealing operation

  • Internally installed configuration

  • Naturally pressure-balanced design

  • Constructed with welded metallic bellows

  • Functions efficiently in both rotational directions

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