Split seal

Claim 1

A FIRE SEALING DEVICE FOR A LONGITUDINALLY MOVABLE CABLE PASSING THROUGH AN APERTURE IN A STATIONARY BULKHEAD COMPRISING A TWO-PIECE BUSHING HAVING A PASSAGE THERETHROUGH AND A SHOULDER INTERJACENT THE ENDS THEREOF, THREADS ON THE OUTER SURFACE PORTION OF THE BUSHING BETWEEN SAID SHOULDER AND ADJACENT BUSHING END, AT LEAST ONE ANNULAR GROOVE IN SAID BUSHING PASSAGE AND COAXIAL THEREWITH, SEAL MEANS HAVING A LONGITUDINAL SLIT THERETHROUGH FOR MOUNTING AROUND THE CABLE AND LOCATABLE IN SAID ANNULAR GROOVE OR GROOVES FOR EFFECTING A SEALING ENGAGEMENT ABOUT THE CABLE WHEN THE BUSHING IS ASSEMBLED THEREAROUND, AND A SLOTTED NUT HAVING THREADS ENGAGEABLE WITH SAID BUSHING THREADS SECURING THE SHOULDER OF SAID BUSHING IN ABUTTING ENGAGEMENT WITH A SIDE SURFACE OF THE STATIONARY BULKHEAD, SAID SLOT OF A SUFFICIENT WIDTH TO PERMIT THE CABLE TO PASS THERETHROUGH AND OF INSUFFICIENT WIDTH SO AS TO PRECLUDE SAID NUT FROM MAINTAINING THE BUSHING SHOULDER IN SAID ABUTTING ENGAGEMENT WHEN THREADEDLY ENGAGED WITH SAID BUSHING, SAID BUSHING PASSAGE DIAMETER BEING SUFFICIENTLY LARGER THAN THE DIAMETER OF THE CABLE WHEREBY THE ONLY CONTACT BETWEEN THE CABLE AND SEALING DEVICE IS THE SEALING ENGAGEMENT OF SAID SEAL MEANS ABOUT THE CABLE.