O-ring sizes

Because they are so widely used there is a variety of global standards for O-ring dimensions.

The most commonly used Imperial size standards are:

And the commonly used Metric standards are:

Fluid 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

O-ring Application Guide