O-Rings (Buna-N)

These replacement elastomeric o-rings are used (in conjunction with a centering ring - not included) for sealing ISO flanges. The ISO flange (also called Large ISO) is used for HV chamber ports and is available in two distinct styles; ISO-K which uses clamp fasteners and ISO-F which uses nut and bolt fasteners.

O-Rings Feature:

  • O-Rings available in Viton (fluorocarbon), Buna-N (nitrile rubber), and silicone materials
  • The more popular o-ring sizes for vacuum use are listed in technical data
Flange Size Material O-Ring ID O-Ring
Cross Section
ISO63 Buna-N 72.4 5.3
ISO80 Buna-N 85.1 5.3
ISO100 Buna-N 104.1 5.3
ISO160 Buna-N 151.9 5.3
ISO200 Buna-N 215.4 5.3
ISO250 Buna-N 266.2 5.3
ISO320 Buna-N 317 7
ISO400 Buna-N 393.2 7
ISO500 Buna-N 494.3 7
ISO630 Buna-N 633.5 7


DATA | /gallery_1/rozmery_iso_komponentu | O-rings.jpg