Specializing in used and new surplus vacuum equipment and components.
These are NEW MKS HPS KF-50 NW 50 Viton o-ring / stainless steel centering ring assemblies.
Our price: $7.50 each - we have a number of these available.
HPS part number 100312706
KF-50 o-ring / centering ring assemblies
stainless steel centering rings
Click on picture below to view a larger, higher-resolution version.