# O Ring dimension for watertight enclosure

**URL:** <https://discuss.bluerobotics.com/t/o-ring-dimension-for-watertight-enclosure/4132>\
**Category:** Build/Make\
**Tags:** guide\
**Created:** [January 23, 2019, 10:25am UTC](https://discuss.bluerobotics.com/t/o-ring-dimension-for-watertight-enclosure/4132 "2019-01-23T10:25:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![SobrunAtfal](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/sobrunatfal/32/3429_2.png) [@SobrunAtfal](https://discuss.bluerobotics.com/u/SobrunAtfal)\
**Post date:** [January 23, 2019, 10:25am UTC](https://discuss.bluerobotics.com/t/o-ring-dimension-for-watertight-enclosure/4132/1 "2019-01-23T10:25:28Z")

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Hi guys… first of all, I am sorry for my English.

Somebody can guide me how to make an O Ring flange. For example, I have an acrylic tube with inner diameter of 94 mm. what is the good size of O Ring that I must buy? and how about the dimension of O Ring flange must be?

Thank you for your attention. 🙂

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**Author:** ![hscadden](https://avatars.discourse-cdn.com/v4/letter/h/e480ec/32.png) [@hscadden](https://discuss.bluerobotics.com/u/hscadden)\
**Post date:** [January 23, 2019, 11:15am UTC](https://discuss.bluerobotics.com/t/o-ring-dimension-for-watertight-enclosure/4132/2 "2019-01-23T11:15:52Z")

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Go get this document. It is the Parker O-Ring handbook. I have made many high pressure seals using the guidelines in the document. There are critical dimensions defined for “Flange” style seals etc.

Overall the handbook is a very good read into the world of static and dynamic seals.

[https://www.parker.com/literature/O-Ring%20Division%20Literature/ORD%205700%20Parker\_O-Ring\_Handbook.pdf](https://www.parker.com/literature/O-Ring%20Division%20Literature/ORD%205700%20Parker_O-Ring_Handbook.pdf)

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**Author:** ![SobrunAtfal](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/sobrunatfal/32/3429_2.png) [@SobrunAtfal](https://discuss.bluerobotics.com/u/SobrunAtfal)\
**Post date:** [January 23, 2019, 3:41pm UTC](https://discuss.bluerobotics.com/t/o-ring-dimension-for-watertight-enclosure/4132/3 "2019-01-23T15:41:21Z")

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Hi Harold, thank’s for your information. 🙂