Ideal Vacuum | ISO 250 Centering Ring Stainless Steel with Viton O-Ring, NW-250 Vacuum Flange Size, Typically Used with 10 Inch O.D. (254 mm) Tubing
Centering Rings 54mm to 75mm [13424] - $8.69 : Apogee Rockets, Model Rocketry Excitement Starts Here
NW50 Viton® Centering Ring
NW Centering Ring Without O-Ring - Apex Vacuum
ISO-K/ISO-F Centering Ring | Pfeiffer Vacuum
ISO-KF Overpressure Centering Ring
Adapting Centring Ring with O-Ring - IBERICA VACUUM
810001, Centering Ring, NW100, ISO LF, Large Flange, Fluorocarbon-based fluoroelastomer (FKM / FPM), 304ss | MDC Precision | MDC Precision
Ideal Vacuum | ISO 63 Centering Ring Stainless Steel with Viton O-Ring, NW-63 Vacuum Flange Size, Typically Used With 2.5 Inch O.D. (63.50 mm) Tubing
Centering Ring KF 25 With Viton® O-Ring, KF 25 (NW 25), Stainless Steel, The centering ring contains a rubber elastomeric o-ring. Those are also recognized as NW10, NW16, NW25, NW40, or KF-10
KC25SB | Agilent
Ideal Vacuum | One Sided Centering Ring Assembly, NW-200 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-02-124