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Single Spring Seal for
High Pressure


Features &


  • Balanced face designs allow for higher pump pressures

  • Machined head available to withstand more rigorous conditions

  • Antimony Impregnated carbon faces improve durability and heat dissipation

  • Bellows design enhances alignment capabilities and helps compensate for face wear

  • Bi-directional

  • Torque of pump shaft drives through machined drive band and notches

  • Rugged single spring minimizes clogging in stuffing box

  • Multiple face and elastomer choices

Balanced Faces:

  • Antimony-Impregnated Carbon, Silicon Carbide, Tungsten Carbide


  • Buna, Viton®, Aflas®, Neoprene, EPDM


  • 304, 316, Monel

  • Pressure: Up to 1200 psi / 82 Bar g

  • Temperature: -40°F to +400°F. / -40°C to 204°C

A1B drawing
A1B dimensions

Standard Materials of Construction

Operating Limits

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