All three compression values must fall between 5 30 squeeze.
O ring groove diameter tolerance.
Corporate headquarters clarence ny 716 759 3344.
Understanding o ring sizes and tolerances standard sizes the standard sizes used by parco and the other major o ring manufacturers in the united states are defined by aerospace standard as568b aerospace size standard.
O ring groove design guides offer default dimensional guidance on the most basic o ring groove design applications.
Find the right o ring tolerance for your application and easily order online today from the world s largest o ring inventory network.
An o ring is contained in a gland and forced to flow into the surface imperfections of the glands and any clearance gaps available to it.
Its inside diameter id and its cross sectional diameter cs see figure 1.
An o ring can perform sealing by means of squeeze under low pressure conditions.
The best o rings are useless without the right groove design which becomes increasingly important the more demanding the.
Dimensional tolerances for all metric o rings offered by global o ring and seal are in accordance with iso 3601 1b.
The extent of extrusion depends upon the hardness of o ring the pressure and the size of the clearance gap.
Secondly the o ring is at its smallest cross section tolerance limit and the gland is at its largest size tolerance limit.
Then click the global size to find possible matching items in our store.
Explore o ring groove design guides for face seal flange dovetail flange x ring and other o rings.
Metric o ring groove dimensions are listed for the most common metric cross sections with and without backup rings.
Metric o ring groove designs vary greatly and choosing the right one for your application is important for maximum o ring performance.
O ring metric groove design pdf seal design company info.
This metric o ring groove design reference guide will help you find the right radius back up pressure and other o ring dimensions for basic applications.
Two dimensions describe the size of an o ring.
Our tolerances are only meant to serve as a guide.
The o ring inner diameter id should also stretch approximately 5 over your groove or gland.
We have included static dynamic and pneumatic applications.
If you have a custom o ring size that does not appear on this chart contact us directly and we can help you size.
You can select your tolerance range in the store.
O ring groove design overview.
