Precision Polymer Engineering Ltd., PPE, is a leading developer and manufacturer of high quality advanced sealing components.  PPE offers a comprehensive range of sealing solutions compliant with FDA, USP Class VI, 3-A sanitary standards, as well as GMP quality criteria.  PPE manufactures any size O-ring whether it is a custom size or to any standard. 

O-rings are available to AS 568A (American O-ring Sizes),
JIS B 2401 (Japanese O-ring Sizes), 
BS1806 (British Imperial O-ring Sizes), British Imperial Extended O-ring Sizes,
BS4518 (British Metric O-ring Sizes),
ISO3601 (International Metric O-ring Sizes),
DIN3771 (German O-ring Sizes),
Le Joint Francais 'R' (French O-ring Sizes).