Hubbell Incorporated RACO 4726 wire cap connector 1-1/2 in liquid-tight nylon zinc

Hubbell RACO 4726 Liquid-Tight Connector

The Hubbell RACO 4726 is a straight liquid-tight conduit fitting designed for 1-1/2 inch trade size applications. It connects flexible non-metallic Type B conduit to a 1-1/2 inch MNPT box entry. The nylon body with zinc components provides a secure connection for electrical installations requiring liquid-tight sealing. This connector suits commercial and industrial wiring projects where moisture resistance is needed.

Installation Requirements and Common Issues

The fitting threads directly into a compatible 1-1/2 inch knockout without requiring a strain relief mesh or external grounding lug. Installers must verify the conduit is flexible liquid-tight non-metallic Type B to ensure proper engagement. A frequent issue occurs when the conduit type does not match the fitting specification, resulting in a compromised seal. The straight orientation simplifies alignment in tight enclosures.

Sustained Environmental Performance

The nylon and zinc construction maintains its seal under continuous exposure to moisture and oils typical of liquid-tight environments. Without a hazardous location rating, the connector is limited to general-purpose wet or damp locations. The materials resist degradation from standard industrial contaminants during extended service. Performance depends on correct torque during installation to prevent leakage over time.