52/53 Series is made of steel malleable iron, or aluminum tapered hub threads. With safe‑edge ground thru 4" cone and double bevel seating ring (through 2"). Malleable iron, tapered hub threads. With safe‑edge ground cone and double bevel sealing ring (through 2").
4 Inch Steel External Bonding Liquidtight Insulated Connector Flexible Metal Conduit Fitting, Straight, With Copper Lug for Awg 2 to 4/0 Ground Wire, for Use In Wet Locations, 1 Piece