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The APPLETON STG-38 is a 3/8 inch O-ring assembly designed for use in electrical conduit and fitting applications where a reliable, pressure-resistant seal is required. This assembly provides a secure gasket-style seal at threaded or grooved connection points, helping to maintain conduit system integrity in both indoor and outdoor installations. Electricians and maintenance technicians install this type of O-ring assembly when fitting conduit bodies, hubs, or threaded connectors that require a watertight or oil-tight seal. It is a direct-fit, replace-in-kind component suited for routine service and new installation work.
The STG-38 is appropriate for use in commercial and industrial electrical installations where conduit fittings must maintain a sealed connection. Typical applications include panel hubs, conduit connectors, and fitting assemblies requiring a 3/8 inch O-ring. This assembly is well suited for service work where original O-rings have degraded due to age, heat cycling, or chemical exposure.
Designed as an OEM-style replacement O-ring assembly for 3/8 inch conduit fittings and electrical connector assemblies requiring a standard O-ring seal.
Installation is typically performed by a licensed electrician. De-energize and lock out the associated circuit or panel before servicing any conduit fitting or hub. Inspect the seating groove for debris or damage before installing the new O-ring assembly, and ensure the fitting is fully threaded or seated before restoring power. Follow applicable NEC requirements for the installation environment and enclosure type.
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