Alltrade Supply Inc

Quality products since 2014
  • Washers
  • Hole Plugs
  • Spacers
  • Rubber Feet
  • Grommets
  • Tubing Plugs
  • Thumb Screws
 

Solid Silicone Panel Hole Plugs – Electrical Enclosures, Blind Grommets MRO

Description
These solid silicone rubber panel plugs are designed to seal unused holes in electrical panels, junction boxes, and metal enclosures with a clean, flush finish. The snap-in blind design blocks dust, moisture, and debris while protecting wiring and components from sharp edges.

Commonly used in control cabinets, breaker panels, electrical enclosures, and HVAC housings, these plugs are also widely applied in sheet-metal fabrication and equipment panels where a professional finished appearance is required. The flat head sits flush for an OEM-style look in MRO and trade environments.

This is a variation listing. Buyers select one hole size per order. Each selection includes 20 identical plugs of the selected size.

Specifications
Hole fit: Select size from drop-down (metric hole diameters)
Material: Black silicone rubber
Hardness: 60–65 Shore A
Design: Blind grommet / knockout plug
Head style: Flat / flush-mount
Function: Hole sealing, edge protection, dust control
Surface types: Metal, plastic, composite panels
Use environment: Indoor / outdoor light industrial

Key Uses

  • Electrical panels and junction boxes

  • Control cabinets and enclosures

  • HVAC equipment housings

  • Sheet-metal knockouts and blind holes

  • Industrial equipment panels and covers

  • MRO and facility maintenance repairs

Package Options
Each selection is one uniform hole size (not an assortment).
• Pack quantity: 20 plugs per selected size
• Please use the drop-down box to choose your required hole diameter
You can add multiple sizes to your cart before checkout if needed.

Service
• Ships from California, USA warehouse
• 51,000 buyers' reviews
• 99.8 percent positive feedback
• Free shipping with tracking included

Product Specs
Features: Locking Plug
Manufacturer Warranty: 1 Month
Number of Outlets: NA
Maximum Compatible Appliance Wattage: NA
MPN: NA
Smart Home Compatibility: NA
Unit Type: Unit
Country/Region of Manufacture: Unknown
Material: Silicon rubber
Recommended Environment: Indoor/Outdoor
Plug Type: Rubber knockout plugs
Input Voltage: NA

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We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.

We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.

We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.

We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.

We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.

We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.

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These solid silicone panel hole plugs provide a professional solution for sealing unused openings in electrical enclosures, junction boxes, and control cabinets. Designed for snap-in installation, each plug closes a single blind hole size, blocking dust and moisture while protecting wiring from sharp metal edges. Commonly used in breaker panels, HVAC housings, industrial equipment, and facility MRO environments, they also serve auto body and fabrication needs in firewalls, floor pans, and sheet-metal panels. Sizes correspond to metric hole diameters such as 10 mm, 12 mm, 16 mm, 20 mm, and larger enclosure openings, making them ideal for spec-driven electrical work and professional maintenance applications where a clean, flush finish is required.