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Sealing Solutions for Semiconductor, FPD & Thin Film Solar
A guide to Perlast perfluoroelastomers and other high performance elastomers.

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Sealing Solutions for Semiconductor
VAT Kimura Qualification

O-ring Sizes

An O-ring, or toroidal seal, is the most common type of seal used in the world today.

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.

PPE manufactures O-rings to any of the following international standard O-ring sizes:

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SAE AS568 American Standard O-ring sizes
ISO3601 International Organisation for Standardisation (metric O-rings)
British Standard BS1806 O-ring sizes (imperial) -replaced by ISO3601 standard
British Standard BS4518 O-ring sizes (metric O-rings)
British Standard extended series 500-800 O-ring sizes (imperial)
German Standard DIN3771 metric O-ring sizes -replaced by ISO3601 standard
Le Joint Français 'R' metric O-ring sizes
Japanese Standard JIS B 2401 (P, G and V) O-ring sizes