The centering ring with a screen is used to filter the vacuum flow and keep objects from being sucked into your vacuum pump or Helium detector.
This O-ring is round in cross-section, and is designed for use in a wide variety of sealing applications. Rubber elastomer o-ring made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons.
These centering rings with screen mesh are useful in many situations in which a vacuum system or instrument needs to be protected from contamination by particulate generated from outside the system or from within.
Round in cross-section to provide a seal between cylindrical overlapping surfaces.A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring.