Duolok Tube Fittings are designed, manufactured, and quality controlled to be totally
"interchangeable" with the Swagelok® brand of tube fittings. Further,
component by component examination plainly shows the two brands as completely "component-intermixable".
To provide a reliable, leak-proof connection in instrumentation and process
tubing systems, Duolok tube fittings consist of four precision-machined components:
body, front ferrule, back ferrule, and nut.The double ferrule design, with the
staged sequential swaging action of the ferrules during make-up, compensates for the
variation in tubing materials, hardness, and thickness of the tube wall to provide
leak-tight connections in an extensive range of applications.
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