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RSA SEAL®

With Full Heel Bearing

RUGGED “U”-TYPE SEAL FOR LOW TEMPERATURES

Greene, Tweed’s RSA Seal® (Rubber-Spring Actuated) offers low compression set, high tear resistance, modulus, abrasion resistance and long life in rugged operating conditions. The RSA seal with full heel bearing is a compact, pressure-compensating U-type seal made from a proprietary high-molecular weight elastomer formulated for low-temperature performance. It incorporates an O-ring energizer to apply uniform radial loading on the seal’s back-beveled lip. The Avalon® heel bearing serves as a low friction, high-shear strength stabilizer to maintain exact lip-point interference between the seal and sealing surface. This results in no leakage during ovalization and breathing during deflection of the strut.

FEATURES & BENEFITS

  • Dry sealing through low-temperature and low-pressure conditions, reducing potential leakage and alleviating environmental concerns
  • Proprietary, specially formulated urethane elastomer provides low compression set leading to high resilience along with high tear strength and high abrasion resistance
  • Service proven long life in rugged operating conditions enables designers to meet objectives of increasing system pressures and equipment weight reductions
  • Elliptical annulus design provides free space behind the energizer allowing for axial expansion and assuring positive retention of the rubber springs; the energizer remains wholly within the seal at all times ensuring maximum radial force at the seal lips, optimizing low temperature/low pressure performance

APPLICATIONS

  • Dynamic, unidirectional landing gear applications
  • Accumulators and reservoirs
  • Unidirectional utility actuators


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RSA CONFIGURATION

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RSA SEAL® PART NUMBERING SYSTEM

The part numbering system requires the use of the material designator tables found in the next column. For nonstandard designs contact GT engineering.

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Contact your local Greene, Tweed representative for specific recommendations to suit higher performance requirements.

 

Material Designator Tables

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Gland Cross-Section Designator Table
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Gland Width Designator Table
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DIMENSIONAL INFORMATION (IN INCHES)

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