Dynamic O-Ring Shaft Seal

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Description

Lesker Dynamic O-Ring Shaft Seal

 

Features

  • 1/4" shaft versions house two ball bearings that support the shaft of the o-ring seal for the smooth, low-torque operation usually found only in expensive motion feedthroughs
  • Bronze bushings support the shaft on the 3/8" and 1/2" shaft versions
  • A pre-loaded fluorocarbon o-ring seals the shaft, making over- or under-compression by inexperienced operators impossible
  • Seal allows dismantling in seconds and without tools, enabling operator to replace or re-grease the o-ring easily from the atmosphere side
  • Feedthroughs offer non-continuous manual or motor-driven operation at speeds up to 500 rpm
  • Aluminum or stainless steel casings
  • Use barrel adapters to mate larger shaft diameters
  • Feedthrough uses a 1" baseplate fitting to mount to a standard 1" feedthrough port

NOTE: Vacuum seals for moving shafts are best run discontinuously and infrequently. Since the elastomers in o-ring seals are dynamic—rubber presses against a moving metal surface—they are susceptible to leaks and should be used for rough and high-vacuum conditions only.

 

 

Lesker Dynamic O-Ring Shaft Seal

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