Bridgeport Fittings Steel Seal...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.54
Bridgeport Sealing Locknuts

Bridgeport Fittings Steel Sealing Locknuts with PVC Seal - Zinc Plated Raintight Connection

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Model: BF-141

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2.54
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Bridgeport Fittings Steel Sealing Locknuts with PVC Seal

Professional Raintight Conduit Connection Solution

Bridgeport Fittings Steel Sealing Locknuts deliver reliable raintight sealing performance for threaded conduit connections to enclosures. Featuring zinc electro-plated steel construction with integrated PVC seal, these professional-grade locknuts provide secure fastening and weather protection for electrical installations requiring NEMA FB-1 rated performance.

Professional Features & Benefits

  • Steel Construction with Zinc Plating: Provides long-term durability and corrosion resistance in demanding environments
  • Integrated PVC Seal: Ensures raintight performance to prevent moisture damage and maintain system integrity
  • NEMA FB-1 Rating: Meets professional standards for weather-resistant electrical connections
  • Secure Fastening Design: Steel locknut construction delivers reliable conduit-to-enclosure connection strength
  • UL Listed (E9391): Certified safety and performance compliance for professional electrical applications
  • Zinc Electro-Plate Finish: Enhanced corrosion protection extends service life in harsh environmental conditions

Technical Specifications

  • Country Of Origin: India
  • Department: Electrical
  • Division: Electrical H1
  • Field Application: Steel locknut with PVC seal used to provide raintight seal when fastening threaded conduit to unthr
  • Nema Rating: FB-1
  • Product Color: Yellow
  • Product Finish: Zinc electro-plate
  • Product Material: Steel
  • Raintight: This locknut ensures a raintight seal to prevent damage from the elements and ensure continued high
  • Secure Connection: The steel conduit locknut fastens the connection from the conduit to the enclosure
  • Sub Division: Electrical-E H2
  • Ul File: E9391
  • Zinc Plated Steel Body: The steel body is zinc plated for long-term use in corrosive environments

Professional Applications

  • Commercial Electrical Installations
  • Industrial Conduit Systems
  • Outdoor Electrical Enclosures
  • Weather-Exposed Connections
  • NEMA-Rated Panel Connections
  • Corrosive Environment Applications

Why Choose Bridgeport Fittings Quality?

Bridgeport Fittings delivers proven reliability through UL Listed certification and NEMA FB-1 rated performance. The zinc electro-plated steel construction with integrated PVC seal ensures long-term durability and weather protection for professional electrical installations requiring dependable raintight connections.

Manufacturer Resources

Product Specs

Department:
Electrical
Division:
Electrical H1
Nema Rating:
FB-1
Product Color:
Yellow
Product Finish:
Zinc electro-plate
Product Material:
Steel
Sub Division:
Electrical-E H2
Certifications:
E9391
Product Type:
Locknut
Product Subgroup:
Conduit Fittings
Product Group:
Conduit & Raceway

Bridgeport Fittings BF-141 – Frequently Asked Questions

1) What size conduit do Bridgeport sealing locknuts come in?
Bridgeport's steel sealing locknuts with PVC seal run from 1/2 inch up to 4 inch: 1/2 (141), 3/4 (142), 1 (143), 1-1/4 (144), 1-1/2 (145), 2 (146), 2-1/2 (147), 3 (148), 3-1/2 (149) and 4 inch (150). Order by trade size of the threaded conduit or the connector hub you are landing in the enclosure.
2) Will a sealing locknut make a raintight connection into an unthreaded enclosure knockout?
That is exactly the job. The steel locknut threads onto the conduit or connector and the integrated PVC seal compresses against the enclosure wall around an unthreaded knockout, giving a raintight seal while the steel body pulls the mechanical connection tight. It is rated NEMA FB-1 for that use.
3) Is a sealing locknut UL Listed for inspection on a commercial job?
Yes. The Bridgeport sealing locknut is UL Listed under file E9391 and carries a NEMA FB-1 rating, which is what an inspector looks for on a weather-exposed enclosure penetration.
4) Should I use a sealing locknut or a plain steel locknut?
Use a plain locknut for dry indoor work where you only need the mechanical bite and bonding. Use the sealing type anywhere moisture can reach the enclosure, outdoor panels, wash-down areas, rooftop runs, because the PVC seal is what keeps water out of the knockout. A standard locknut will hold the conduit but will not seal it.
5) Will a zinc plated steel sealing locknut hold up outdoors and in corrosive areas?
The body is steel with a zinc electro-plate finish, which is the standard corrosion protection for exposed conduit hardware, and Bridgeport lists corrosive environment and outdoor enclosure work as intended applications. For continuous salt or chemical immersion service most specs call for a non-ferrous or coated fitting instead.
6) Do I still need a separate gasket or sealing washer with these locknuts?
No separate gasket is needed. The PVC seal is built into the locknut, so one piece per penetration handles both the fastening and the weather seal. You will still need whatever connector or threaded conduit end is landing in the knockout.
7) Is the Cantex 5133330 PVC wallplate an alternative to a Bridgeport 141 sealing locknut?
No. The Cantex 5133330 is a PVC single toggle switch wallplate, a cover that mounts over a switch device at the wall surface. The Bridgeport 141 series is a zinc electro-plated steel locknut with an integrated PVC seal that fastens threaded conduit to an unthreaded enclosure opening and provides a NEMA FB-1 raintight seal at that connection, in trade sizes from 1/2 inch through 4 inch. The two do different jobs and neither substitutes for the other, so if the requirement is a raintight conduit-to-box termination, stay with the steel sealing locknut in the matching trade size.
8) Which side of the enclosure wall does the sealing locknut go on?
The sealing locknut goes on the outside of the enclosure so the PVC seal compresses between the nut and the exterior surface of the knockout, blocking water at the point it would enter. A conventional locknut is typically run on the inside to complete the mechanical and bonding connection.
9) Can I standardize one sealing locknut across every panel size in a facility?
Not with one part number. The nut has to match the trade size of each conduit run, so a facility stocking program means carrying the sizes you actually use out of the 1/2 through 4 inch range. Many MRO stockrooms keep 1/2, 3/4 and 1 inch on the shelf and order the larger sizes per job.
How fast can I get the Bridgeport Fittings BF-141 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bridgeport Fittings BF-141 come with a warranty?
Absolutely. The Bridgeport Fittings BF-141 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bridgeport Fittings BF-141?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bridgeport Fittings BF-141 from ZenSupply?
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