Magnum-P V7 | John Crane

Magnum-P V7

The Magnum-P V7 bearing isolator is the result of our dedicated mission to increase bearing life. It utilizes magnetically controlled lapped flat sealing faces in collaboration with expulsion ports and a deep channel labyrinth. Isomag's primary sealing surface rotates with the shaft, and does not damage shaft surfaces! The MP V7 creates a positive, bi-directional seal with or without shaft rotation, on horizontal or vertical applications. Bolted flange designs are per customer specification. It can be used in thousands of applications from 3/4" to 20" shaft sizes. Our compact design interchanges with common labyrinth isolators. The problem of lubricant loss and bearing contamination are resolved, helping achieve and improve maintenance cycle life expectations.



  • Rotating, O-ring driven, ferrous face ensures no wear on the host equipment
  • Magnetically energized faces creating liquid-tight, positive, bi-directional sealing
  • Oil recirculation labyrinth groove with drain-back
  • Ability to maintain extremely clean lubrication up to 75,000 hours
  • Reduces the frequency of oil changes

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