Aerospace series. Fluid fittings, flanged, 90° elbowed. Sealing by O-ring for 0,8 mm thick tubesBS EN 3631: 2008 Aerospace series. Fluid fittings, flanged, 90 elbowed. Sealing by O ring for 0,8 mm thick tubes The purpose of BS EN 3631 is to define the characteristics of fluid fittings which are flanged, 90 elbowed, sealing by O ring, and for 0,8 mm thick tubes. Contents of BS EN 3631: Foreword Scope Normative references Required characteristics Configuration, dimensions, tolerances Forging flanged fitting Machined flanged fitting Fitting Fitting

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BS 9999:2008 provides a risk-based structure that takes varying human factors into account

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