John Crane Type 8-1 Replacement

FAS Type X1

John Crane Type 8-1 Replacement


Technical Features

  • Unbalanced
  • Multi-spring
  • Bi-directional
  • Dynamic O-ring



  • Rotary faces: Carbon Graphite, Silicon Carbide, Tungsten Carbide
  • Stationary seats: Ceramic, Silicon Carbide, Tungsten Carbide
  • O-rings: Buna, Viton, EPDM, Aflas, Neoprene
  • Metallurgy: 316 SS with Hastelloy C™ springs

Operating Conditions

Dimensions:0.500” – 4.000”
Max Pressure:150 PSI / 10 BAR
Max Temperature:160°C / 320°F
Velocity:22.5 M/S – 4500 FPM

John Crane Type 8-1 Replacement Chart Flex-A-Seal John Crane Type 8-1


Quote Request

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