Mechanical seal having a seal insert mounted in a laminated shell.

摘要

A mechanical face seal including a non-rotatable member (25) fixed to a container and a rotatable member (11) fixed to a shaft. The rotatable member includes a laminated holder (27) constructed of press-fitted, metallic bands (35,37) and a non-metallic insert (29) press-fitted in the holder (27). The outer band (35) is in tension and the inner band (37) in compression upon assembly of the holder (27) so that the stresses in these parts tend to balance one another. Upon assembly of the insert (29) to the holder (27), the inner band (37) may be in tension.