A new addition to John Crane’s sealing systems is edge welded bellows technology. Sealol welded metal bellows seals are pressure balanced, have light spring loads, and contain all static secondary seals. In addition, the seals’ bellows plate design employs a 45 tilt angle, which distributes stresses away from the inner diameter welds of the bellows plates. This tilt angle, along with a three sweep radius and a nesting ripple plate design, gives uniform stress distribution and rigidity to the bellows for long, reliable seal life.
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