Optimizing O-Ring Groove Dimensions for Seals: Tips and Considerations

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Discussion Overview

The discussion revolves around the dimensions and considerations for O-ring grooves in various sealing applications, including static, dynamic, and face sealing. Participants share resources and practical tips related to O-ring design and sealing performance.

Discussion Character

  • Technical explanation, Practical advice, Debate/contested

Main Points Raised

  • One participant requests links for O-ring groove dimensions for BS and ISO metric standards, indicating difficulty finding free resources.
  • Another participant suggests using Parker seals' catalogue as a valuable resource for O-ring dimensions, noting that it is not easily linkable due to its web format.
  • A participant expresses gratitude for the resource provided, indicating it exceeds their needs and was previously unknown to them.
  • One participant advises considering dove-tail O-ring grooves for hard-to-reach seals, sharing a personal experience with a piston valve where this approach was beneficial.
  • Another participant emphasizes the importance of polished seating surfaces and recommends using Dow Vacuum Grease for vacuum applications to enhance sealing performance.

Areas of Agreement / Disagreement

Participants generally agree on the importance of proper groove design and surface preparation for effective sealing, but there are no explicit consensus points or resolutions regarding specific dimensions or methods.

Contextual Notes

Some limitations include the lack of specific dimensional data shared in the discussion and the dependence on external resources for comprehensive information.

Davieslad
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Hi,

I need to find the dimensions for O ring grooves for different size o rings, for static, dynamic and face sealing. Does anyone have a web link for these for BS and/or ISO metric dimensions. All the ones i can find are subscription ones.

Many thanks

Ed
 
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Parker seals have an excellent O ring guide with their catalogue
Go to parker.com -> literature -> o rings (it's a Javascript thing you can't link to)

For special/very large o rings they make to order so call them about availability before you start designing the massive vacuum chamber.
 
That is bloody marvellous! Its about 100 time better than i need, and i never would have found it by myself! Thank you very much!
Ed
 
When you get seals that are hard to get to make sure to consider dove-tail O-ring grooves. I did this on a piston valve and it does wonders. Also, for vacuum applications, make sure that the seating surfaces are nicely polished. Mainly scratches across the groove are bad. Also use Dow Vacuum Grease.
 

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