Ring Size 325

Use our free ring size converter to determine your ring size by circumference or diameter.

Ring size 325.

We need to know the size of the ring early in the design process. You will need to print it out and place it on a flat surface. Select a size to buy standard and custom o rings from the world s largest inventory network or custom orders can be made within a few weeks. We have several ways to help you determine the size of the ring you want.

If you have a ring that fits you can use this chart. Download our ring size pdf. Click here to download our practical ring size guide. Selecting the i don t know option will allow you to select a ring size later.

Select i don t know. The standard sizes used by o ring manufacturers in the united states are defined by aerospace standard as568b aerospace size standard for o rings. Take your best guess. Print the ring sizer making sure that it is printed to actual size.

If the size is wrong simply send in your ring within 90 days of your purchase and we will resize. Cut out the ring sizer and open the slot where marked. Ring sizes follow a scale of numbers and half numbers typically from ring size 3 to 13 5 for adults. Choose your preferred sizing method.

With the numbers facing out slip the tip of the ring sizer through the slot. This ring size method uses a tape measure approach with specific ring metrics. O ring size chart as568 standard o ring sizes find as568 o ring standard sizes by cross section inside diameter and outside diameter in our o ring size chart and separate o ring tolerance chart. 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.

Women s rings are commonly between sizes 3 and 9 while men s rings are usually sized between 8 and 14. Take your best guess and don t sweat it.