BELL Knockout Seal: Steel, 3 in Conduit Hole Size, Steel, Zinc Electroplated
The BELL Knockout Seal is a steel electrical enclosure hole seal designed for sealing knockouts. This model, MPN 1039, features a zinc electroplated finish and includes a bolt and nut for installation. It is intended…
SKU 3G-OTH-07426
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Product Description
The BELL Knockout Seal is a steel electrical enclosure hole seal designed for sealing knockouts. This model, MPN 1039, features a zinc electroplated finish and includes a bolt and nut for installation. It is intended for use with 3-inch conduit hole sizes.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the BELL Knockout Seal used for?
The BELL Knockout Seal (MPN 1039) is used to seal unused knockouts in electrical enclosures, preventing dust, moisture, and debris ingress. It is commonly applied in industrial control panels, junction boxes, and switchgear to maintain enclosure integrity and meet safety codes.
What are the specifications of the BELL Knockout Seal?
The BELL Knockout Seal is made of steel with a zinc electroplated finish. It fits 3-inch conduit hole sizes and includes a bolt and nut for secure installation. The manufacturer part number is 1039, and it is designed for knockout-type holes in electrical enclosures.
Where to buy the BELL Knockout Seal worldwide?
3G Electric supplies the BELL Knockout Seal (MPN 1039) to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to install the BELL Knockout Seal?
To install the BELL Knockout Seal, insert the bolt through the center of the seal and the knockout hole, then secure it with the included nut from inside the enclosure. Tighten firmly to create a weather-resistant seal. Always follow standard electrical safety practices and enclosure sealing guidelines.
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Common applications for BELLBELL Products
3G Electric supplies BELL electrical enclosure hole seals. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.







