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Gasket – Do’s and Don’ts

asked Jun 16, 2016 in Engineering by Normandy (21,040 points)

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answered Jun 16, 2016 by Normandy (21,040 points) | selected Jun 16, 2016 by odadmin
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  • Check the type, class, size and material specification of the gasket before using it. Check with the piping specification to confirm that it is correct. Only use gaskets with non-asbestos materials.
  • Check the gasket for damage, nicks, etc. Ensure that it is clean and free from any contaminants before use.
  • Ensure that the gasket fits correctly.
  • Check the flange face-to-face separation once the gasket has been installed and the bolts tensioned. A uniform separation is required. If not, the gasket could be locally crushed or deformed and will not seal properly.
  • Wire brush studs/bolts and nuts to remove any dirt on the threads. Ensure that the nuts can run freely down the threads before use. Coat the studs/bolts with a thin film of an approved lubricant prior to installation.
  • Use pre-cut tanged reinforced sheet gaskets.
  • Wear gloves when handling tanged reinforced gaskets.
  • Do not re-use old gaskets. For every joint being made up, a new gasket should be used.
  • Do not use a gasket that has no identification. It may appear to fit the flange but this is not a guarantee.
  • Do not cut or deform a gasket to fit a flange. If the gasket doesn’t fit, the wrong one has been chosen.
  • Do not hand-cut tanged reinforced gasket sheet. Use pre-cut gaskets.

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