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Priority to ES0228922UpriorityCriticalpatent/ES228922Y/en
Publication of ES228922UpublicationCriticalpatent/ES228922U/en
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Publication of ES228922YpublicationCriticalpatent/ES228922Y/en
Box sealing device in hydraulic jacks, essentially characterized by the fact that in the upper internal part of the cylinder or sleeve, two guiding bushes are installed, in axial parallel, between which an O-ring is located, which closes hermetically on the piston, while the cylinder is joined to the edge of the housing by means of welding. (Machine-translation by Google Translate, not legally binding)
ES0228922U1977-05-311977-05-31
Box sealing device on hydraulic jacks
ExpiredES228922Y
(en)