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KF Center Ring with O-Ring

The KF Centering Ring vacuum fittings correlates to flange size of NW fittings. The centering ring contains Viton, a rubber elastomer O-ring.

Viton® is resistant to heat (400°F/200°C) and to aggressive fuels and chemicals. The centering ring is made of corrosive resistant Stainless Steel.

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We provide best-in-class engineered precision vacuum chambers and exceptional customer service.


Our factory follows strict quality control procedures and is supported by experienced mechanical and design engineers, machinists, welders, and assembly personnel.

Customer Support

Need some help getting your product set up? We’ll be there. We also provide ongoing support.