O Ring Groove Diameter Tolerance

We have included static dynamic and pneumatic applications.

O ring groove diameter tolerance.

Metric o ring groove designs vary greatly and choosing the right one for your application is important for maximum o ring performance. The best o rings are useless without the right groove design which becomes increasingly important the more demanding the. 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. Explore o ring groove design guides for face seal flange dovetail flange x ring and other o rings.

Its inside diameter id and its cross sectional diameter cs see figure 1. Corporate headquarters clarence ny 716 759 3344. Then click the global size to find possible matching items in our store. Dimensional tolerances for all metric o rings offered by global o ring and seal are in accordance with iso 3601 1b.

You can select your tolerance range in the store. An o ring can perform sealing by means of squeeze under low pressure conditions. 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. Metric o ring groove dimensions are listed for the most common metric cross sections with and without backup rings.

Based on the cross section cs of your o ring you will choose the corresponding o ring groove depth and o ring groove width dimensions. Our tolerances are only meant to serve as a guide. 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. These will produce the highest compression and lowest compression percentages.

O ring tolerances for cross section and inside diameter the o ring tolerances outlined in the charts below reference general purpose o rings and x rings. O ring groove design overview. Two dimensions describe the size of an o ring. Secondly the o ring is at its smallest cross section tolerance limit and the gland is at its largest size tolerance limit.

O ring groove design guides offer default dimensional guidance on the most basic o ring groove design applications. The o ring inner diameter id should also stretch approximately 5 over your groove or gland. All three compression values must fall between 5 30 squeeze. If you have a custom o ring size that does not appear on this chart contact us directly and we can help you size.