SEALING OF FIXED JOINT Russian patent published in 2001 - IPC

FIELD: sealing engineering, particularly, sealing of flange joints of submarine apparatus members. SUBSTANCE: flanges facing each other are provided with mutually conjugating grooves which form annular cavity. Thin-walled tightness sealing ring having C- shaped cross-section is mounted into the cavity. The sealing ring projections are in contact with the cavity surface of both flanges. The cavity is filled up with ferromagnetic fluid and provided with annular electromagnetic system which core is made of material of high residual magnetization. The electromagnetic system is provided with control circuit. EFFECT: enhanced reliability of the sealing devices. 5 cl, 3 dwg