FIELD: process engineering.
SUBSTANCE: proposed piston comprises casing and at least one sealing bearing arranged around said housing. Said sealing bearing has cut or gap to allow fitting said bearing on piston casing. Casing and bearing are provided with jointing appliances to lock said bearing relative to said casing in axial and angular directions. Every sealing bearing has at least two holes to engage with relevant radial ledges extending from piston casing.
EFFECT: higher reliability of fastening.
33 cl, 16 dwg
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