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NSI Industries 143 - Locknut, Sealing, Steel / PVC, Size 1 Inch
NSI Industries

143

UPC: 781747001436


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Minimum Qty: 25

Multiplier: 25

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Overview

The NSi Industries 143 locknut is a high-performance, 1‑inch fastening solution designed for demanding industrial environments. Crafted from a durable steel core with a PVC sealing sleeve, this locknut delivers reliable pressure containment and leak‑proof sealing in piping, valve, and assembly applications. Its dual‑material construction combines the strength and corrosion resistance of steel with the flexible, non‑metallic properties of PVC, making it suitable for both wet and dry systems, including those with aggressive chemicals. The 1‑inch size offers a standard fit for common industrial pipe diameters, while the integrated sealing element reduces the need for additional gaskets or seals, simplifying installation and maintenance. NSi Industries’ precision engineering ensures consistent torque performance and long service life, even under high‑temperature or high‑pressure conditions. Whether you are upgrading existing infrastructure or designing new systems, the 143 locknut provides a cost‑effective, reliable solution that meets stringent industry standards.
  • Dual‑material construction: steel core with PVC sealing sleeve
  • 1‑inch size for standard industrial pipe diameters
  • High‑strength and corrosion‑resistant for demanding environments
  • Integrated sealing reduces need for extra gaskets
  • Precision engineered for consistent torque and long service life

Specifications

Application
Steel locknut with PVC seal used to provide raintight seal when fastening threaded conduit to unthreaded opening in a box or enclosure.
Cable Entry
Through the fitting or conduit that the locknut is attached to
Color
Yellow
Finish
Zinc Electroplated
Material
Steel
Size
1 IN
Special Features
Provides raintight seal
Standard
UL
Trade Size
1 in
Type
Locknuts
Package Weight (Imperial)
0.052 L
Package Weight (Metric)
0.024 kg
Locknut, Sealing, Steel / PVC, Size 2 1/2 Inch

147

Locknut, Sealing, Steel / PVC, Size 2 1/2 Inch
PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 3/4 Inch/21 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.78 Inch/19.81 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Yellow

HUB3/4-Y

PVC Coated Zinc Hub Connector with Thermoplastic Insulated Throat, Pipe Size 3/4 Inch/21 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.78 Inch/19.81 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Yellow
Locknut, Sealing, Steel / PVC, Size 3/4 Inch

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Locknut, Sealing, Steel / PVC, Size 3/4 Inch
Locknut, Sealing, Steel / PVC, Size 2 Inch

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Locknut, Sealing, Steel / PVC, Size 2 Inch
Locknut, Sealing, Steel / PVC, Size 3 Inch

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Locknut, Sealing, Steel / PVC, Size 3 Inch
Connector, Clamp Type, Two-Piece, Steel, Size K.O. 1-1/4 Inch

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Connector, Clamp Type, Two-Piece, Steel, Size K.O. 1-1/4 Inch
Connector, Clamp Type, Two-Piece, Steel, Size K.O. 3/4 Inch

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Connector, Clamp Type, Two-Piece, Steel, Size K.O. 3/4 Inch
Connector, Clamp Type, Two-Piece, Steel, Size K.O. 1/2 Inch

642

Connector, Clamp Type, Two-Piece, Steel, Size K.O. 1/2 Inch

Frequently Asked Questions

What is the UPC number for this product?

The UPC number for this product is 781747001436.

What is the standard package quantity for Product 143?

The standard package quantity for Product 143 is 100 units.

What NEMA standard applies to this locknut?

This sealing locknut conforms to NEMA Standard FB-1.

What UL standard does this product meet?

This product meets UL Standard UL-514B.

What are the dimensions of Product 143?

Dimension A is 1-13/16 inches, and Dimension B is 3/16 inches. The trade size is 1 inch.

What is the finish of the locknut?

The locknut has a zinc electro-plate finish.

What materials is the locknut made from?

The locknut is made from steel, and it features a PVC seal.

What is the application of this sealing locknut?

It provides a raintight seal when fastening threaded conduit to an unthreaded opening in a box or enclosure.

What is Product 143?

Product 143 is a 1-inch sealing locknut made of steel with a PVC seal.

What is Product 143?

Product 143 is a 1-inch sealing locknut made of steel with a PVC seal.

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