RSA® Seal

Aerospace, Defense, Industrial Operations

Greene Tweed’s RSA Seal® (Rubber Spring Actuated) offers low compression set, high tear resistance, modulus and 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.

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 ensuring 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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