Steel City LT 90D Liquidtight Flex Metal Connector, Insulated Throat

Four trade sizes: 3/8 inch (LT 890), 1/2 inch (LT 891), 3/4 inch (LT 892) and 1 inch (LT 893). Match the trade size to the liquidtight flexible metal conduit you are running, not to the knockout. Each one is sold individually.

Yes. The LT 90 degree connector has a factory insulated throat, so the conductors bear on a smooth insulating surface as they turn the corner. No separate insulating bushing is needed at that termination.

No. The LT 90 series is built for liquidtight flexible metal conduit. The ferrule and sealing arrangement are matched to the metal core of LFMC, so putting it on nonmetallic liquidtight will not give you a reliable seal or bond. Order a fitting rated for LFNC instead.

Use the 90 when the conduit has to turn immediately at the box or enclosure and there is no room for the flex to make its own bend, typically tight against a wall, under a motor, or at a rooftop unit where a straight fitting would force too small a bend radius on the liquidtight. If you have clearance for the conduit to sweep, a straight liquidtight connector is easier to install and easier to remove later. Steel City catalogs this one specifically as a 90 degree connector for liquidtight flexible metal conduit.

It is a threaded connector: the male hub passes through the knockout and is secured with a locknut on the inside. That means it lands in a standard threaded knockout or a tapped hub of the matching trade size. Verify the locknut and any sealing ring you need for a wet location are on your order, since the fitting is sold as a single piece.

The body is zinc die cast, which is the standard material for liquidtight flex metal fittings in damp and wet locations. It is intended for use with liquidtight flexible metal conduit, so the fitting plus the conduit jacket is what keeps water out of the run. Do not substitute it for a fitting on non-metallic liquidtight where a different fitting style is called for.