The NESCO SR-20 is a 2" steel retainer ring with an integrated seal, designed for professional electricians and contractors who need a reliable, watertight conduit entry point in wet, damp, or outdoor installations. Sealing rings are a critical component wherever conduit enters enclosures, junction boxes, or panels exposed to moisture — including rooftop equipment, exterior walls, underground pull boxes, and industrial wash-down areas. The integrated seal eliminates the need for a separate gasket, saving time on the job site and ensuring a consistent, code-compliant seal every time. The steel retainer ring provides the mechanical strength to hold the seal firmly in place under conduit movement and vibration, making it a dependable choice for long-term installations in demanding environments.

Specifications