Tunnels in polyurethane leaf

Tunnels in polyurethane leaf thickness 0.30 mm made with high-frequency welding, for flanges of diameters mm 186, 250, 300, 400, 487, 637 and other, variable length according to the client’s request.
In order to ensure a perfect seal on the channeling of the tunnels, they are fitted at the ends of NBR O-rings incorporated in the polyurethane by means of high frequency welding.

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