O Ring Measurement Guide

We have millions of as568 o rings in stock which can be purchased easily through our o rings online store.

O ring measurement guide.

If the ring is in between two sizes choose the larger ring size. The proper o ring size is a fundamental aspect of proper o ring performance. This o ring size chart can help you find the as568 size o ring or the metric sizing of standard size o rings. 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.

Print the the ring size chart. O ring size charts note. The standard sizes used by o ring manufacturers in the united states are defined by aerospace standard as568b aerospace size standard for o rings. Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections.

Please contact us if you are looking for a size not shown in the 5 32 group. The safe choice for seals and moulded parts used in hydraulics pneumatics precision engineering food medical industries oil gas valve pump and aerospace. 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. M seals specialises in seals for industrial use.

Printable paper strip. The as o ring size chart has a column that shows the nominal size along side the actual size. Popular o ring size standards include usa s as568 o ring size chart the uk s bs 1806 o ring sizing chart and japan s jis b 2401 o ring size list. Nominal cross section o rings.

To make sure it s printed to actual size choose scale 100 when selecting your print options. 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. 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. 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.

From the finest precision seals to the. Originally the nominal size was just for a listing of the approximate fractional dimensions of the o ring.