ISO250-1000-AR-S 
ISO250 Series Aluminum Centering Ring with Silicone O'Ring and Aluminum Outer (Spacer) Ring 
• A: 10.05" 
• B: 0.15" 
 Silicone Replacement O-Ring 
• 200°C Maximum 
• Chemical Applications 
 ISO250 Centering Ring with Aluminum Outer Ring 
(Spacer Ring) - High Vacuum Hardware 
Fits ISO250 High Vacuum Flange Equivalents:  
ISO-250, LF250, NW250, NW-250, Large Flange, 
 
ISO-LF, ISO-K, ISO-MF 
Fits ISO-B250 High Vacuum Flange Equivalents 
ISO-F, ISO-LFB, ISOB-250, ISOB250, ISO250-F 
LFB250, NW250, NW-250, Bolted Large Flange  
 ISO250-1000-AR-S Compare to: 4500049 LF250-1000-AR-S  LF250-1000-CTR-AL-SN ISO250-1000-ARS