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Recent content by hella

  1. hella

    Button Head Cap Screws

    Do tensile tests on a sample lot of fasteners.
  2. hella

    liquid propellant tank bladder structural analysis software

    There was a NASA package called BOSOR
  3. hella

    Fitting Rating

    With a socket weld fitting, the highest stress will be in the fillet weld between the fitting and the tube, so the tube wall thickness does not come into play in the pressure rating of the fitting. Here is a great explanation of weld stress for various geometries -...
  4. hella

    low temperature O-ring seals

    Try Creavey Seal Co You want an energized O-ring for those temperatures Also consider Helicoflex

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