| 摘要 |
<p>This invention concerns an improved ring for rotating mechanical seals. It is of the type with opposing slip-faces and uses a moulded plastic or rubber ring to support a box-shaped steel ring whose surface has been machined to provide the annular lapped crown which constitutes the slip-face of the mechanical seal. The sealing ring in question consists of a box-shaped ring, obtained by shearing, drawing and then coining a strip of steel, which is anchored to a supporting ring made of moulded plastic or rubber, the two parts being joined together by a series of buttons obtained by providing a series of holes in the inner circular wall of the steel box-ring, into which the molten material flows and then solidifies during moulding; once the material has solidified, a series of projections locking the plastic or rubber body to the metal insert will have been formed.</p> |
