Liquid Tight Insulated Straight Connector 3-1/2″, Steel, USA Made
https://nsiindustries.com/product/liquid-tight-insulated-straight-connector-3-1-2-steel-usa-made/
Use Bridgeport liquid tight insulated straight connectors to join metallic liquid tight conduit to an electrical box or enclosure in wet environments. NPT threads, knockout and inner sealing gaskets provide a liquid tight seal. Made in the USA.