Elastomeric bellows rotary

The PK Seal features a single spring rubber bellows that will not wear the shaft or sleeve. It fits into shallow stuffing boxes and the flexible rotary face floats to compensate for misalignment.


  • Single spring rubber bellows will not wear shaft or sleeve
  • Flexible rotary face floats to compensate for misalignment
  • Fits into shallow stuffing boxes
  • Reliable, economical performance
  • Unitized construction means simple installation--no loose parts to inventory
  • Won't clog in dirty environments


  • Minimum Shaft Diameter:        0.500 in.    /    12.7 mm
  • Maximum Shaft Diameter:    3.000 in.    /    76.2 mm
  • Pressure:                To 150 psi     /    10 bar
  • Vacuum:                28 in Hg     /   711 mm Hg
  • Temperature:            To 400°F    /     204°C
  • Shaft speed:            To 2500 fpm / 12.7 m/s


  • Metallurgy: 316SS
  • Springs: Stainless steel
  • Bellows: Fluoroelastomer or nitrile
  • Faces: chemical grade carbon and ceramic; silicon carbide and tungsten carbide optional (See price list for other options)


  • Centrifugal pumps
  • Gear boxes
  • Speed reducers
  • Other rotating equipment
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