O Ring Measurement Guide

From the finest precision seals to the.

O ring measurement guide.

Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections. Place the ring over the circles lining up the inside edges of the ring to the circle that best matches on the ring size chart. O ring size charts note. Whether your application conforms to u s japanese jis british bs or common metric sizing for o rings these o ring size charts will help you locate the right o ring size.

To make sure it s printed to actual size choose scale 100 when selecting your print options. This o ring size chart can help you find the as568 size o ring or the metric sizing of standard size o rings. Metric o rings and custom size o rings are often used when a standard o ring size will not fit an application or existing hardware. The as o ring size chart has a column that shows the nominal size along side the actual size.

O ring size chart of standard sizes of o rings in as 568 and bs 1806 iso 3601 metric sizes o rings in nbr silicone viton rubbers. In de signing this new group of o rings we left spacing in the part numbers to allow us to add additional sizes should they be required. The proper o ring size is a fundamental aspect of proper o ring performance. Prior to the common use of dial calipers many people called out a 1 inch by 1 1 4 rt o ring this was a dash 214.

Printable paper strip. Please contact us if you are looking for a size not shown in the 5 32 group. We have millions of as568 o rings in stock which can be purchased easily through our o rings online store. This as568 o ring chart is a sae size standard for o rings and shows as568 rev b or as568b o ring sizes which supersedes as568 rev a or as568a o ring dimensions.

Originally the nominal size was just for a listing of the approximate fractional dimensions of the o ring. The standard sizes used by o ring manufacturers in the united states are defined by aerospace standard as568b aerospace size standard for o rings. If the ring is in between two sizes choose the larger ring size. M seals specialises in seals for industrial use.

That document published by the society of automotive engineers sae lists the sizes of o rings in six series or groups in both inches and millimeters. Nominal cross section o rings.