Welded Metal Bellows Mechanical Seals

The major advantage of using a metal bellows seal is the removal of a semi-dynamic sliding elastomer from a conventional pusher type mechanical seal. This removes the potential for mechanical seal hang-up or shaft/sleeve fretting.

Engineered to provide longer service life:

  • With 50% more bellows than the industry standard (12 instead of 8) there is less stress on each convolution in the bellows stack, which helps increase seal life.
  • AESSEAL® standard bellows material, Alloy 276, has superior mechanical and corrosion resistance properties than other industry standard bellows materials such as 300 series Stainless Steel or Alloy 20.
  • The hydraulically balanced bellows unit is available in a variety of different material options with either elastomer or graphite packing sealing element.