High Pressure Hydraulic Seals

Abstract

An R&D Program was conducted to develop and demonstrate Dynamic Seal Designs (Rod and Piston Seals) for Advanced Aircraft 55.2 MPa (8,000 psi) hydraulic systems using nonflammable CTFE fluid over a temperature range of -54C (-65F) to +135C (275F). Two sizes of each seal design were tested in simplex, unbalanced flight type actuators using dual unvented rod seals under simulated flight control surface air loads. The rod seal designs were tested in MIL-G-5514 grooves and clearances. Several elastomers energized and spring energized plastic rod seal designs backed with modulus plastic back-up rings completed successfully the 12,200,000-cycle test. None of the tested piston seal designs completed the test. Keywords: Elastomers; Hydraulic fluid; High pressure seals; Nonflammable fluid; Sealing systems; Back up rings; Dynamic testing.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1988
Accession Number
ADA218221

Entities

People

  • Z. J. Janczur

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Airframes
  • Chemistry
  • Control Systems
  • Creep
  • Friction
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Metal Matrix Composites
  • Military Aircraft
  • Physical Properties
  • Test And Evaluation
  • Test Fixtures
  • United States

Readers

  • Electrical Engineering
  • Internal Combustion Engine (ICE) Technology.