FIELD: seals for movable joints; pneumatic and hydraulic systems. SUBSTANCE: mounted in body of movable air line by means of thread is female hemisphere with sealing rings made from fluoroplastic. Immovable inner male hemisphere of immovable air line rests against sealing rings by its spherical surface. Immovable air line is provided with sleeve which is engageable with spring which is engageable in its turn with supporting bearing fitted in female hemisphere. EFFECT: enhanced tightness of swivel joint over entire range of working pressures. 1 dwg
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