NSI Industries 251-MSRT - Bridgeport Fittings Mighty-Seal« 3/4 inch EMT Connectors are used to connect a 3/4 inch EMT raceway to a box, device or enclosure. The 251MSRT 3/4 inch Mighty-Seal connector is UL listed for use in wet locations. Raintight. Patented
NSI Industries

251-MSRT

UPC: 781747172518


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Minimum Qty: 25

Multiplier: 25

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Overview

The NSI Industries Bridgeport Fittings Mighty-Seal™ 251-MSRT is a 3/4 inch Electrical Metallic Tubing (EMT) connector engineered for quick, tool-free installation in wet locations. This UL-listed connector is specifically designed to meet the demands of outdoor and industrial environments where exposure to moisture is a constant factor. The 251-MSRT features a patented Mighty-Seal design that ensures a secure, vibration-resistant connection to boxes, devices, or enclosures without the need for additional tools, significantly reducing labor time and installation costs. The connector achieves IP66 and IP67 ratings, providing superior protection against dust, water ingress, and other environmental contaminants. It fully complies with NEC (National Electrical Code) and UL (Underwriters Laboratories) requirements for wet locations, making it a reliable choice for applications such as outdoor lighting, HVAC systems, and industrial facilities. Compatible with standard 3/4 inch EMT conduit, the 251-MSRT offers a durable and efficient termination solution that maintains electrical integrity even in harsh conditions. The removable design of the connector allows for easy adjustments or maintenance, ensuring long-term performance and flexibility. This product is manufactured in the United States and carries the SKU 251-MSRT.
  • 3/4 inch EMT connector for boxes, devices, and enclosures
  • UL listed for wet locations
  • Raintight and IP66/IP67 rated for superior protection
  • Patented tool-free, push-on installation reduces labor
  • Vibration-resistant and secure connection

Specifications

Application
Bridgeport Fittings Mighty-Seal® 3/4 inch EMT Connectors are used to connect a 3/4 inch EMT raceway to a box, device, or enclosure. The 251-MSRT 3/4 inch Mighty-Seal® connector is UL listed for use in wet locations.
Connection Type
Push-on
Connector Type
PUSH-EMT®
Finish
Ball burnish
Insulation
False
Ip Rating
IP66/IP67
IP Rating
IP67
Material
Steel
Material
Polymer
Material Quality
Zinc Die Cast
Series
Mighty-Seal
Size
3/4 IN
Special Features
Connectors assembled with knockout gasket, no separate pieces to buy and stock
Standard
cULus
Trade Size
3/4 in.
Type
Connector
Package Weight (Imperial)
0.168 L
Package Weight (Metric)
0.076 kg
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Frequently Asked Questions

What is the trade size of the 251-MSRT connector?

The trade size of the 251-MSRT connector is 3/4 inch.

Is the 251-MSRT connector suitable for wet locations?

Yes, the 251-MSRT connector is UL listed for use in wet locations.

What material is the 251-MSRT connector made from?

The 251-MSRT connector is made from zinc die cast.

What certifications does the 251-MSRT connector have?

The connector has certifications including UL514B and CSA 22.2.

What is the installation process for the 251-MSRT?

Installation involves inserting a properly deburred end of EMT into the Mighty-Seal® and rotating until it reaches the end stop.

How do you remove the 251-MSRT connector?

Removal is done by loosening the nut and taking out the component parts from the conduit.

What is the finish of the 251-MSRT connector?

The finish of the 251-MSRT connector is ball burnished.

What is the standard package quantity for the 251-MSRT?

The standard package quantity for the 251-MSRT is 250.

Where is the 251-MSRT connector manufactured?

The 251-MSRT connector is manufactured in the USA.

What is the UPC number for the 251-MSRT connector?

The UPC number for the 251-MSRT connector is 78174717251.

How to Install the Mighty-Seal™ Push-EMT™ Connector

This guide provides step-by-step instructions for installing the Mighty-Seal™ Push-EMT™ Connector for use in wet locations.

Estimated time: 30m

Tools needed:

Screwdriver, Reaming/deburring tool

Supplies needed:

Mighty-Seal™ Push-EMT™ Connector, Knockout gasket, Locknut

  1. Prepare the EMT

    Cut the Electrical Metallic Tubing (EMT) squarely and remove all burrs using a reaming/deburring tool to ensure a smooth outer edge.

  2. Install the connector

    Firmly push the Mighty-Seal™ Push-EMT™ Connector onto the EMT until it reaches the conduit stop, ensuring not to rotate the EMT more than a quarter turn.

  3. Secure the fitting

    Remove the serrated locknut and position the knockout gasket on the outside of the enclosure. Insert the fitting into the knockout and tighten the locknut hand-tight plus a quarter turn.

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