SEAL Russian patent published in 1999 - IPC

FIELD: devices used for separation of liquid media interface. SUBSTANCE: seal has flexible housing rigidly tied by reinforcing stiffening member having opposite and parallel surfaces. Joint of "blind" bend of stiffening member coincides with has beginning of segment port of seal. Boundary of termination of tangential section of reinforcing member has curvilinear profile of flexible zone on inner (inactive) side; sealing working edge is pressed by band-type spring. shape of reinforcing stiffening member consists of circular profile having circular section located tangentially; this section is engageable with fillet which is just elongation of cylindrical-and-taper profile. Taper portion of reinforcing stiffening member is overlapped at inclination with thin layer or circular surface of flexible seal of housing at boundary of transition of surfaces of revolution. Vertex of circular triangular (relative to surface of revolution) profile is made opposite point of bend ( on opposite side in section); inclined riffles made relative to main working edge of seal have rectangular profile in projection on datum plane and curvilinear profile in sectional plane passing through longitudinal axis of symmetry of each separate riffle by normal. EFFECT: enhanced durability and improved quality of seal. 1 dwg