Features
A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring.
This O-ring is made of Fluorine Rubber, is round in cross-section, and is designed for use in a wide variety of sealing applications.

Specifications:
Product Name: Vacuum Centering Ring
Material: Fluorine Rubber, Aluminum Alloy
Outer Diameter: 53mm/2.09 Inch
Inner Hole Diameter: 39mm/1.53 Inch
Thickness: 8mm/0.31 Inch

Package Content:
2 Pcs x Vacuum Centering Ring