Abstract: A connector for a liquid tight, flexible electrical conduit formed of a plurality of interlocking, thin, arcuate metal ring sections having an interior wall of alternating ridges and grooves. The connector includes a ferrule end insertable into the conduit with a plurality of spatially separated arcuate segments matching the conduit grooves for threadable engagement. A resilient seat member snug fit onto the ferrule is engaged by the conduit end as the conduit is threaded onto the ferrule to sealingly terminate the full perimeter edge of the conduit end, thereby enabling the conduit and connector assembly to be air and liquid tight. One or more ramp formed barbs are provided on one or more of the ferrule arcuate segments to lock and secure the connector on the conduit and prevent undesired loosening.

Abstract: A connector assembly for attachment to the end of a compressible plastic covered conduit having a spiralling groove on the inside thereof, the connector assembly including an air impervious cylindrical sleeve member enveloping the compressible plastic covering and terminating at its outer end in a continuous annular inwardly and axially outwardly extending resilient seal-forming lip. A coupling member is provided having a sleeve portion with an external threading which snugly interfits with the spiralling groove on the inside of said conduit, thereby to expand the conduit outwardly to compress said compressible plastic conduit covering up against the inner surface of said sleeve member to form a liquid and airtight seal thereat. The coupling member has a flange which is axially held in a liquid and airtight sealing relationship with the continuous annular lip of the sleeve member.