O-Ring Standards Size

Standards Size of O-Ring

We have a wide range of different standard size O-rings in stock: British Standard BS1806 and BS4518, US SAE AS568, Japanese JIS B 2401, German & international standards publications. Because they are so widely used there is a variety of global standards for O-ring dimensions.

British Standard BS1806

Specification for Dimensions of toroidal sealing rings.

US SAE AS568

Aerospace Size Standard for O-rings and the equivalent local standard.

Australian Standard AS2842-1986

Fluid Power O-rings and Housings. The commonly used Metric standards include:

British Standard BS4518

Specification for Metric Dimensions of toroidal sealing rings.

Japanese Standards Association JIS B 2401

O-rings, with similar Swedish and French standards publications.

Japanese Automobile Standard JASO F404

O-ring dimensional standard for automotive applications.

German and International standards publications

Metric O-Ring Standard

Full metric dimensional reference covering cross-sections from 1.00mm to 6.00mm.

Fitco Seals also supplies:

• Vulcanised and cold joined O-rings
• O-ring Cord in Nitrile, EPDM, Viton and Silicone
• O-ring Backups
• Quad or X-rings
• O-ring Kits