Metric O Ring Size Tolerance

Standard metric sizes for o rings are defined by international standard iso 3601 1 2002.

Metric o ring size tolerance. Browse our metric o ring size chart to view common metric o ring sizes and order o rings from the world s largest inventory network. If the o ring quad ring x ring or square ring you need doesn t fit these standards custom. Parco offers o rings in all 369 standard sizes shown on the enclosed chart. Dimensional tolerances for all metric o rings offered by global o ring and seal are in accordance with iso 3601 1b.

As an example for any of the as568 100 series o rings the cross section is 103 with a tolerance of 003. These variances are called tolerances and the standard acceptable tolerances are specified in the previously mentioned as568 o ring size chart or the metric tolerances chart for metric o rings. Fluid power systems o rings part 1. Custom o rings are available upon request and can typically be produced within a.

For usa military and aerospace applications refer to as568 o ring tolerances which are tighter tolerance than general purpose tolerances. Use the metric o ring size chart to find common metric o ring sizes by cross section inside diameter and outside diameter. That standard groups metric sizes into two series g and a. The proper o ring size is a fundamental aspect of proper o ring performance.

Some of the standards referenced here specify the acceptable tolerance ranges for the o rings within that standard. Inside diameters cross sections tolerances and size identification code. Metric sizes standard metric sizes for o rings are defined by international standard iso 3601 1 2002. You can select your tolerance range in the store.

That standard groups metric. Fluid power systems o rings part 1. Our tolerances are only meant to serve as a guide. You should always select a size that you feel comfortable will work for your application.

After extensive research we have adopted the tolerances shown in the following table which are based in iso 3601 1 class b annex a 4. However with the exception of our as568 size chart our other size reference charts do not list tolerances as these tend to vary between the standards issuing organizations. Common metric o rings sizes. Due to the fact that there are literally dozens of o ring standards globally finding a single recognized standard for metric o ring tolerances is virtually impossible.

Thousands of common metric o rings and non standard o rings in metric sizes are available in stock. In addition to standard metric o ring sizes thousands of non standard metric o rings sizes are available in stock or can be custom made within a few weeks usually without additional tooling fees.