Specialists of SKB-1 KMZ have developed design documentation for a set of polyurethane seals for the nutrunner of the main connector of a nuclear reactor.
Polyurethane sealing rings are widely used in hydraulic and pneumatic units, as well as in other systems.
Compared to rubber, polyurethane has a higher resistance to oils, alkalis, and acids, withstands a wider temperature range, and can be manufactured in any size with varying degrees of hardness – from soft, like rubber, to hard, like plastic.
Due to these properties, the use of polyurethane seals can significantly increase the service life of mechanisms and reduce the amount of maintenance.
As part of the modernization of the reactor's main connector nutrunner, KMZ is replacing traditional rubber sealing rings with polyurethane ones.
KMZ is the sole supplier of reactor housing seals. The holding company faces the task of creating nutrunners for all nuclear power plants under construction with Rosatom's participation worldwide.
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