Cable gland for electric cable

Claim 1

A cable gland for passing a cable through a member comprising in combination a resilient grommet and a compression collar, said grommet comprising: an axial passage through which said cable passes, said passage being tapered from a diameter greater than the diameter of said cable at one end thereof to a diameter less than the diameter of said cable at the other end thereof, the diameter of said passage being equal to the diameter of said cable at approximately the midpoint of said passage, an annular V-shaped groove about the periphery of said grommet adjacent said one end for sealingly engaging said member, an exterior bevel about the periphery of said grommet at said other end, said bevel terminating at said passage in a sharp edge to apply radially inward pressure upon said cable when said cable is passed therethrough and thereby form a fluidtight seal, and an inwardly curved reduced diameter portion about the periphery of said grommet intermediate said V-shaped groove and said bevel, at least a portion of said reduced diameter portion being between said midpoint and said other end, said compression collar comprising: a flange having a plurality of inwardly facing teeth completely encircling said grommet and engaging said reduced diameter portion, means for tightening said compression collar about said reduced diameter portion so that said teeth exert a high clamping pressure on a narrow band about the entire periphery of said reduced portion to sealingly clamp said grommet and said cable together around the full circumference thereof.