ISO-GARD® Teflon Bearing Isolator

Standard Design • Vertical Design • Flangeless • Grease-Purgeable • Split Pillow Block

Standard ISO-GARD®

  • The most aggressive labyrinth in the industry, for superior contaminant exclusion
  • Two-piece unitized construction won't come apart during installation
  • Supports predictive maintenance programs and reduces unscheduled downtime
  • PTFE material provides excellent chemical resistance and wide temperature capability
  • Non-contact design eliminates shaft scoring, drag and frictional heat—no lubrication required
  • Press-fit design means easy installation—no tools required
  • Performs in accordance with NEMA MGI as required by IEEE Std. 841
  • Constructed of FDA-compliant, glass-filled PTFE material†
  • Flangeless design available
  • No equipment modification required for most pumps
  • Available in split pillow block designs

† Available with FDA-compliant O-rings

ISO-GARD® Operation

Typical Application

Ideal alternative to radial lip seals in nonflooded oil, or grease applications:

  • Pump bearing frames
  • Electric motors
  • Gear boxes
  • Blowers
  • Turbines
  • Splindles
  • Bowl mills


Material: Blue, glass-filled PTFE
Temperature: -40ºF to +400ºF
(-40ºC to 204ºC)
Surface speed: To 4,500 fpm (22.9 m/s)
Axial motion: ±0.015" (0.38 mm)
Misalignment and runout: ±0.020" (0.50 mm)
Pressure: Ambient*
• 5 psi for Grease-Purgeable ISO-GARD®

Go Back Go Back

Warning - Properties/applications shown throughout this Website are typical. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations, consult Beacon Gasket & Seals Co. Failure to select the proper sealing products could result in property damage and/or serious person injury. Performance data published in this Website has been developed from field testing, customer field reports and/or in-house testing. While the utmost care has been used in developing this Website, we assume no responsibility for errors. Specifications subject to change without notice.