Thomas & Betts Non-Insulated 90 Degree Liquid-Tight Connector

Four trade sizes: 3/8 inch, 1/2 inch, 1 inch and 2-1/2 inch. Pick the size by the liquidtight flexible metal conduit you are terminating, not by the box opening, since the connector threads into a knockout matching that same trade size.

Non-insulated means there is no plastic throat liner at the conductor exit. It is fine for cables entering with their own jacket protection, but where conductors would bear on the bare metal throat, or where your spec or inspector calls for an insulated throat, order the insulated-throat version of the same 90 degree liquidtight connector in the matching trade size.

These are liquidtight flexible metal conduit (LFMC) fittings. The clamping gland is sized to the convolutions of metal liquidtight; for liquidtight flexible nonmetallic conduit you need a fitting listed for LFNC instead. Match the fitting to the conduit type you actually have in hand.

Malleable iron body. That is the heavier-duty choice over die-cast or nonmetallic fittings for machine tool runs, outdoor equipment feeds and anywhere the fitting takes mechanical abuse.

A fixed 90 turns the conduit immediately at the enclosure, so you can feed a box mounted tight against a wall, under a panel or on the side of a motor without needing a sweeping bend in the flex. If you have room for the conduit to curve on its own, a straight connector is simpler and cheaper; if you need the run to leave the box flat against the surface, the 90 is what gets it there.

Yes, the 1 inch trade size of this non-insulated 90 degree liquidtight connector is Thomas & Betts part 5254.

These are the standard liquidtight connector assembly: body, gland nut and sealing gasket for the conduit side, with the threaded hub and locknut for the enclosure side. Order one per conduit termination, and confirm your knockout is the matching trade size (3/8, 1/2, 1 or 2-1/2 inch) before you set the box.

The 2-1/2 inch size is the largest offered here and is the one used on large motor and equipment feeds where the liquidtight carries full-size conductors. Malleable iron construction suits that duty. Keep in mind a 90 degree fitting at that size has a tight sweep, so plan your conductor pulling, a 2-1/2 inch run does not want to be pulled around multiple fixed 90s.