Need help sizing your hardware for standard sized O-rings? Visit our O-ring groove dimension look-up tool. Get a quote for standard or custom sized O-rings Japanese Standard JIS B 2401 (P, G and V) O-ring sizes.Le Joint Français 'R' metric O-ring sizes.German Standard DIN3771 metric O-ring sizes - replaced by ISO3601 standard.British Standard BS4518 O-ring sizes (metric O-rings) - replaced by ISO3601 standard.
British Standard extended series 500-800 O-ring sizes (imperial).British Standard BS1806 O-ring sizes (imperial).ISO3601 International Organisation for Standardisation (metric O-rings).AS568 SAE (Society of Automotive Engineers) Standard O-ring sizes.PPE manufactures elastomer O-rings from a broad range of material grades to the following international standard O-ring sizes:. We recommend one size larger than your normal ring. Wide shank ring: This ring has a wider band. Stackable rings: For a looser fit, select one size up from your normal ring size. When measuring, round off to the closest whole millimeter. Used to form a physical barrier to prevent the mixing of gases or liquid fluids, the simple toroidal shape of an O-ring has proven to offer high sealing efficiency across a wide range of applications. When choosing a ring size: Choose the ring size of the largest finger on which you’ll be wearing the ring. An O-ring, or toroidal seal, is the most common type of seal used in the world today.