NSI Industries 1063-RT - Mighty-Seal 1" to 3/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Wet Locatons.
NSI Industries

1063-RT

UPC: 781747140630


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Overview

NSI Industries Mighty-Seal 1063-RT raintight reducing washers provide a reliable, UL-listed solution for transitioning between 1" and 3/4" raceway sizes in wet or outdoor environments. Each kit includes one coated and one uncoated galvanized steel washer, ensuring corrosion resistance and long-term durability. The washers maintain raceway integrity while resisting sunlight degradation, making them ideal for NEMA 3R-rated enclosures and outdoor electrical installations. Key specifications include a galvanized steel construction for superior corrosion resistance, IP66/IP67 ingress protection for dust and water resistance, and a NEMA 3R rating for outdoor use. The red coating on one washer provides visual identification and additional UV resistance, while the uncoated washer ensures compatibility with standard galvanized raceways. These washers are suitable for wet locations, including commercial, industrial, and utility applications where moisture exposure is a concern. The Mighty-Seal series is designed to eliminate installation errors by providing the correct reducing washer configuration for common raceway transitions. Unlike standard washers, these raintight versions prevent water ingress, maintaining the integrity of the electrical system. The 1" to 3/4" size reduction is a common requirement in conduit runs, junction boxes, and panel enclosures where different pipe diameters must be connected securely. UL-listed and manufactured by NSI Industries, the 1063-RT washers meet stringent safety and performance standards for electrical installations. The galvanized steel construction ensures compatibility with standard EMT, IMC, and rigid conduit systems, while the raintight design prevents moisture-related failures in outdoor or damp environments. These washers are a critical component in maintaining compliance with NEC and OSHA requirements for wet location installations.
  • UL-listed raintight reducing washers for wet locations
  • Includes one coated and one uncoated galvanized steel washer
  • Maintains NEMA 3R rating for outdoor use
  • IP66/IP67 ingress protection against dust and water
  • Sunlight-resistant red coating for UV protection

Specifications

Application
For maintaining wet locations seal on rated enclosures. Coated Washer installs on outside of 3R rated enclosure. Uncoated washer should be installed inside to maintain raceway continuity. Center reducing washers in middle of knock-out. Listed for use with Wet Location Connectors, or Threaded Rigid Conduit (amp, IMC) with standard locknuts. Patented
Color
Green, Silver
Finish
Ball burnish
Material
Galvanized Steel/Rubber
Special Features
Sun Resistant
Standard
cULus
Type
Raintight Reducing Washer
Package Dimensions (L x W x H)
7 IN x 5 IN x 0.01 IN
Package Dimensions (L x W x H)
17.78 cm x 12.7 cm x 0.254 mm
Package Weight (Imperial)
0.030 L
Package Weight (Metric)
0.014 kg
Mighty-Seal® 1-1/4" to 1" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.

1066-RT

Mighty-Seal® 1-1/4" to 1" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.
Mighty-Seal 1-1/4" to 3/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Use in Wet Locations.

1065-RT

Mighty-Seal 1-1/4" to 3/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Use in Wet Locations.
Mighty-Seal® 2" to 1-1/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.

1074-RT

Mighty-Seal® 2" to 1-1/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.
Mighty-Seal 2" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Use in Wet Locations.

1071-RT

Mighty-Seal 2" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Use in Wet Locations.
Mighty-Seal® 2" to 1" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.

1073-RT

Mighty-Seal® 2" to 1" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.
Mighty-Seal 3/4" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.

1061-RT

Mighty-Seal 3/4" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.
Mighty-Seal® 1-1/4" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.

1064-RT

Mighty-Seal® 1-1/4" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.
Mighty-Seal 1" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Use in Wet Locations.

1062-RT

Mighty-Seal 1" to 1/2" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for Use in Wet Locations.
Mighty-Seal®2" to 3/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.

1072-RT

Mighty-Seal®2" to 3/4" Raintight Reducing Washers. Product contains one coated and one uncoated galvanized steel reducing washer. Maintains Raceway Integrity. Sunlight Resistant. Suitable for use in Wet Locations.
Washer, Reducing, Galvanized Steel, Size 4 Inch - 1-1/2 Inch

1090-5

Washer, Reducing, Galvanized Steel, Size 4 Inch - 1-1/2 Inch
Washer, Reducing, Galvanized Steel, Size 3 1/2 Inch - 3/4 Inch

1089-2

Washer, Reducing, Galvanized Steel, Size 3 1/2 Inch - 3/4 Inch
Washer, Reducing, Galvanized Steel, Size 3-1/2 Inch - 2-1/2 Inch

1089-7

Washer, Reducing, Galvanized Steel, Size 3-1/2 Inch - 2-1/2 Inch

Frequently Asked Questions

Is the product suitable for wet locations?

Yes, the product is suitable for wet locations and maintains raceway integrity.

What certifications does the product have?

The product is certified under UL514B and meets NEMA Standard FB-1.

What materials are used in the product?

The product is made of galvanized steel with an EPDM rubber coating.

What is the application of the product?

The product is used for maintaining wet location seals on rated enclosures.

What is the purpose of the coated washer?

The coated washer installs on the outside of a 3R rated enclosure to maintain a wet location seal.

How should the uncoated washer be installed?

The uncoated washer should be installed inside to maintain raceway continuity.

Where is the product manufactured?

The product is manufactured in the USA.

What is the trade size of the washers?

The trade size of the washers is 1 inch to 3/4 inch.

What is the standard package quantity?

The standard package quantity is 200 units.

What is the UPC number for this product?

The UPC number for the product is 78174714063.

How to Install the Mighty-Seal™ Sealing Reducing Washer

This guide provides step-by-step instructions for installing the Mighty-Seal™ Sealing Reducing Washer to ensure a wet-location seal on enclosures.

Estimated time: 30m

Tools needed:

Channel lock pliers, Locknut wrench

Supplies needed:

Mighty-Seal™ Sealing Reducing Washer, Traditional reducing washer, Conduit locknut

  1. Determine the trade size

    Identify the proper trade size of the Mighty-Seal™ Sealing Reducing Washer needed for your application.

  2. Install the washer onto the fitting

    Place the Mighty-Seal™ Sealing Reducing Washer onto the fitting, ensuring it is oriented correctly with the sealing side facing outwards.

  3. Insert the fitting through the enclosure

    Insert the fitting with the Mighty-Seal™ Sealing Reducing Washer through the enclosure knockout, ensuring both washers are centered in the opening.

  4. Secure the fitting

    Tighten the locknut hand tight, plus two additional full turns using channel lock pliers or a locknut wrench to ensure a secure connection. Avoid using a hammer and screwdriver to prevent misalignment.

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