KF-40/ NW-40 Vacuum Fittings, Vacuum Center Ring Made of Aluminum, O-ring = FKM Viton ( lot of 10pcs, Color May Vary)
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<b>[Product Information]</b><br>
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<li>A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring.</li>
<li>O-ring Made of Viton (fluorocarbon elastomer) for use with a variety of chemicals and fuels.</li>
<li>This O-ring is round cross-section to provide a seal between cylindrical overlapping surfaces. It works well in high vacuum environments</li>
<li>Centric Wheel Made out of High Quality Aluminum so it will not bend & ensure a tight fit.</li>
<li>Excellent resistance to aging and ozone. Low gas permeability, low compression set.</li>
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