Rubber Plug5mm - 201mm Silicone Rubber Grommet Plugs for Holes | HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer
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Rubber Plug5mm - 201mm Silicone Rubber Grommet Plugs for Holes | HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer5mm - 201.5mm Silicone Rubber Grommet Plug Bungs Cable Wiring Protect Bushes Black - HomeDIYer

Black Silicone Rubber Grommet Plug | Cable & Wiring Protection Bush | 5mm–201.5mm | 69 Sizes

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By HomeDIYer®

Price:
$2.28 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Black Silicone Rubber Grommet Plug — Cable & Wiring Protection Bush, 5mm–201.5mm, 69 Sizes

Unprotected cable and wiring pass-throughs in metal panels, enclosures, and bulkheads are a leading cause of cable insulation abrasion, short circuits, and ingress of dust and moisture. This silicone rubber grommet plug provides a flexible, heat-resistant, waterproof protection bush for cables and wiring passing through round holes — and also functions as a solid blanking bung for unused holes that require sealing.

Made from premium silicone rubber, rated from -40°C to +250°C, and resistant to UV, acids, alkalis, aging, and abrasion. Available in 69 sizes from A=5mm to A=201.5mm (where A is the outer panel hole diameter and E is the inner cable passage diameter). Prices from $2.28 per grommet. Black color — suited for metal panels, electrical enclosures, automotive bodywork, and industrial equipment.

Suited for cable and wiring pass-through protection in electrical enclosures, automotive panels, marine equipment, industrial machinery, and DIY electronics builds; also used as solid blanking bungs for unused holes in panels and bulkheads.

✅Sizing note: Each size lists two dimensions — A (outer diameter) = the panel hole diameter the grommet fits into, and E (inner diameter) = the cable passage hole through the grommet. Select the size where A matches your panel hole diameter. Ensure your cable or wire outer diameter is smaller than E for a clean pass-through fit.

✅ Key Features of This Silicone Rubber Grommet Plug

  • 🛡️Cable & Wiring Abrasion Protection: The flexible silicone grommet lines the sharp edge of the panel hole, preventing metal edges from cutting or abrading cable insulation — reducing the risk of short circuits, insulation failure, and electrical faults.
  • 🧲Premium Silicone Rubber: Non-toxic, flexible silicone rubber resists cracking, shrinking, hardening, and breaking over time. Maintains flexibility and sealing performance across the full temperature range without becoming brittle.
  • 🌡️Wide Temperature Range −40°C to +250°C: Suitable for automotive engine bay wiring, industrial machinery, outdoor electrical enclosures, and powder coating oven masking — retains flexibility and sealing performance at temperature extremes.
  • 💧Waterproof & Dustproof: The grommet flange seals against the panel surface, blocking water, dust, and contaminants from passing through the hole alongside the cable — suitable for IP-rated enclosure applications and outdoor installations.
  • 📏69 Sizes from 5mm to 201.5mm: The widest size range available — from small 5mm panel holes for thin wire pass-throughs up to 201.5mm large-diameter holes for conduit, pipe, or multi-cable bundles. Covers virtually every common panel hole size.
  • 🔧Dual Function — Grommet or Solid Bung: Use with the inner hole open as a cable pass-through grommet, or use as a solid blanking bung for unused holes that require sealing. One product, two applications.

🎯 Who Is This For?

⚡Electrical Enclosures & Control Panels

Protect cables and wiring passing through metal enclosure walls and control panel cutouts from sharp edge abrasion. Also used to blank unused cable entry holes to maintain IP dust and moisture ratings.

🚗Automotive Wiring & Bodywork

Route wiring through firewall, floor pan, and body panel holes with protection from sharp metal edges, heat, and vibration. Silicone withstands engine bay temperatures and automotive fluids.

⚓Marine & Outdoor Equipment

Seal cable pass-throughs in marine equipment, outdoor enclosures, and weatherproof installations — silicone resists UV, saltwater, and moisture without degrading.

🛠️Industrial Machinery & DIY Electronics

Protect wiring in industrial machinery panels, CNC enclosures, 3D printer frames, and DIY electronics builds from sharp panel edges and vibration-induced abrasion.

Specification Details
Material Silicone rubber
Color Black
Temperature Range -40°C to +250°C
Size Range A=5mm to A=201.5mm (69 sizes); E=3mm to E=184mm
A Dimension Panel hole outer diameter (the hole the grommet fits into)
E Dimension Inner cable passage diameter (the hole through the grommet)
Chemical Resistance Acid, alkali, UV, ozone, aging, abrasion resistant
Application Cable pass-through protection, panel blanking, automotive, marine, industrial
Installation Press-fit into panel hole; no tools or adhesive required
Price Range $2.28 (A=5mm) to $21.69 (A=201.5mm)

Size Reference (Selected Sizes)

Size (A) Inner Passage (E)
5mm 3mm
10mm 6mm
20mm 10mm
30mm 20mm
50mm (approx.) 38mm
76.3mm 64mm
101.5mm 85mm
151.5mm 134mm
201.5mm 184mm

❓ Frequently Asked Questions

How do I select the correct grommet size?

Two dimensions are listed for each size: A = the outer diameter of the grommet body that fits into the panel hole. E = the inner diameter of the cable passage through the grommet. To select the correct size: (1) Measure your panel hole diameter and match it to the A dimension. (2) Check that your cable or wire bundle outer diameter is smaller than the E dimension for a clean pass-through. If you are using the grommet as a solid blanking bung (no cable), select based on A only.

Can this grommet be used as a solid blanking plug with no cable?

Yes — the grommet can be used as a solid blanking bung for unused holes by leaving the inner passage empty. The flanged body seals against the panel surface, blocking dust and moisture ingress. For a fully solid seal, ensure the grommet is correctly sized (A matches the panel hole diameter).

Is this grommet suitable for automotive engine bay use?

Yes — the silicone material is rated to +250°C and is resistant to automotive fluids, oils, and UV exposure, making it suitable for firewall, floor pan, and engine bay wiring pass-throughs. Ensure the selected size provides a snug fit in the panel hole to prevent the grommet from vibrating loose.

Is this grommet waterproof?

Yes — the flanged grommet body seals against the panel surface when correctly sized, blocking water and dust ingress around the cable pass-through. For IP-rated enclosure applications, ensure the grommet flange is fully seated flush against the panel surface on both sides.

Can this grommet be used for powder coating and spray painting masking?

Yes — silicone is rated to +250°C and is suitable for use as a masking plug during powder coating, painting, anodizing, and plating processes. Insert the grommet before the surface treatment process and remove after completion. The silicone will not bond to most coating materials.

What if I need a size not listed, or a bulk quantity?

69 sizes are available from A=5mm to A=201.5mm — select your size from the dropdown above. If you need a custom size or a bulk quantity order, please contact our customer service team with your requirements.

🛒 Select your size (A = panel hole diameter) above, then add to cart.

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