Advantages of metal bellows mechanical seals

2025-08-05

1. Excellent temperature resistance: Capable of withstanding both high and low temperature extremes, making them suitable for applications involving hot fluids or cryogenic media.
2. High pressure resistance: The robust metal construction allows them to handle high-pressure operating conditions effectively.
3. Reduced maintenance needs: They often have a longer service life due to their durable design, minimizing the frequency of replacements and maintenance.
4. Good corrosion resistance: When made from corrosion-resistant alloys (such as stainless steel, Hastelloy, etc.), they can resist attack from aggressive media.
5. Compensatory ability: The bellows structure provides axial compensation, accommodating shaft endplay, thermal expansion, and wear without compromising sealing performance.
6. No need for secondary sealing: The integral metal bellows design eliminates the need for additional dynamic secondary seals (like O-rings), reducing potential leak points.
7. Suitable for clean services: Their design is less prone to trapping particles, making them ideal for applications requiring high cleanliness, such as in the pharmaceutical or food industries.

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