Ideal Vacuum | ISO 160 One Sided Centering Ring Stainless Steel with Viton O-Ring, NW-160 Vacuum Flange Size, Typically Used with 6 Inch O.D. (152.4 mm) Tubing
31mm Bicycle Tire Tape Strip Vacuum Ring Lining Strip Rim Sealing Tire Pad Bike Accessories | Fruugo IL
Various types of rings: (a) vacuum ring, (b) support ring, and (c)... | Download Scientific Diagram