John Crane Type 21 Replacement

FAS Type C

John Crane® Type 21 Replacement

Features

Technical Features

  • Unbalanced
  • Non-clogging single spring
  • Bi-directional
  • Elastomer bellows

Specifications

Materials

  • ROTARY FACES: Carbon Graphite, Silicon Carbide, Tungsten Carbide
  • STATIONARY SEATS: Ceramic, Silicon Carbide, Tungsten Carbide, Stainless Steel
  • BELLOWS: Buna, Viton, EPDM, Aflas, Neoprene
  • METAL PARTS: 304 SS standard or 316 SS option available

Operating Conditions

Dimensions:0.375” – 3.000”
Max Pressure:150 PSI / 10 BAR
Max Temperature:160°C / 320°F
Velocity:13 M/S – 2600 FPM

John Crane Type 21 Replacement Chart Flex-A-Seal John Crane Type 21

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