FIELD: hydraulic machinery engineering; laboratory and test equipment; devices for study and development of rotary contact seals for hydraulic machines. SUBSTANCE: test stand chamber is provided with additional contact seal which is identical to seal under test. Running-in electric motor and unit for measurement of friction forces are connected to testing chamber through elastic couplings whose embracing members are made for longitudinal motion which makes it possible to combine testing procedure with protracted running-in in operating mode. EFFECT: low cost of process; extended functional capabilities. 6 dwg
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