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The given ring on all parameters, both on technical, and on economic, is better than existing. New rings have the greater energy consuming at accumulation of potential energy, which are necessary for maintenance of tightness of pipe coupling. New rings are more simple at assembly, that it is very important for field conditions at emergency repair. Except for that new rings allow to optimize an acuteness of a cutting edge with the purpose of reduction of efforts at hermetic sealing. It allows to achieve the same parameters of pressure, as well as at the previous rings, at much smaller (20%-30%) expenses.

In the given photos experimental samples of new rings are shown. The European technological level of the equipment is necessary for a batch production of rings. By our estimations the price in view of all expenses for tubes with d = 8-20mm will be equal 0.10-0.12 EURO at higher quality.

Investments necessary for introduction of the mentioned above ring will make not more, than 10000-15000 EURO.
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