COMBINED SEAL Russian patent published in 2019 - IPC F16J15/00 

FIELD: manufacturing technology.

SUBSTANCE: invention is intended for use in hydraulic and pneumatic systems. Combined seal represents a ring element made of polymer of triangular cross-section and contacting with sealing surface, with cross-section width equal to 0.6…0.9 of groove width, sectional height of circular element in radial direction is 0.1…0.5 from the groove depth, and a circular-section rubber ring. Depth of rectangular groove is equal to depth of groove for sealing with rubber ring of round section of same diameter.

EFFECT: invention improves reliability of sealing of mating surfaces at low pressures, reduces dimensions of depth of sealing groove and simplifies its collection.

1 cl, 1 dwg