FIELD: sealing units for revolving shafts of pumps, machines and equipment in chemical, oil-refining and other industries. SUBSTANCE: surfaces of friction rings are provided with circular grooves of half-round section for forming tore-shaped cavity during assembly in which tore-shaped ring is placed; tore-shaped ring is split over lateral surface along axis perpendicular to cross section and is engageable with friction rings over surface of said cavity; outer diameter of cross section of split ring exceeds before assembly diameter of cross section of said tore-shaped cavity. As a result, area of friction pair is increased and friction rings are aligned, thus reducing radial and angular misalignment; vibrations are dampened due to elastic deformation of split tore-shaped ring, thus reducing leakage of medium being sealed-up. EFFECT: enhanced efficiency. 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| END SEAL | 2000 |
|
RU2204753C2 |
| END FACE SEALING | 2000 |
|
RU2180415C2 |
| END SEAL | 2001 |
|
RU2216669C2 |
| FACE SEAL | 2003 |
|
RU2260730C2 |
| FACE SEALING | 2003 |
|
RU2260728C2 |
| FACE SEAL | 2004 |
|
RU2288394C2 |
| END SEAL | 2016 |
|
RU2650451C2 |
| END FACE SEAL | 1998 |
|
RU2146023C1 |
| END SEAL | 2004 |
|
RU2295082C2 |
| END SEAL | 1998 |
|
RU2140031C1 |
