Black Snap - On Hole Plug Silicone Rubber Blanking Seal Bung Pipe Tube 2.5mm - 50mm - HomeDIYer

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Black Silicone Snap-On Hole Plug | T-Type Blanking Bung | 2.5mm–15mm | 25 Sizes | 1 pc

Name: Black Silicone Snap-On Hole Plug | T-Type Blanking Bung | 2.5mm–15mm | 25 Sizes | 1 pc
Brand: HomeDIYer
Price: 2.2 USD
Availability: InStock
Rating: 3.0 (2 reviews)

HomeDIYer

2 reviews

By HomeDIYer®

Size: A=2.5mm

Price:

$2.20 USD

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In stock (491 units), ready to be shipped

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Black Silicone Snap-On Hole Plug — T-Type Blanking Bung, 2.5mm–15mm, 25 Sizes

Unfinished holes in panels, pipes, tubes, and enclosures are a common source of dust ingress, moisture infiltration, cable chafe, and an unfinished appearance. This T-type snap-on silicone hole plug provides a clean, secure, waterproof blanking solution for round holes from 2.5mm to 15mm in diameter — pressing in from one side and locking in place without adhesive, fasteners, or tools.

Made from food-grade silicone (Shore hardness 40–50), rated from -40°C to +250°C, and resistant to UV, acids, alkalis, and corrosion. Available in 25 sizes (A = 2.5mm to 15mm, where A is the small-end insertion diameter). Prices from $2.20 per plug. Black color; other colors (clear, white, gray) available — see color options in the listing.

Suited for blanking unused holes in electrical enclosures, control panels, aluminum extrusions, PVC and steel pipes, sheet metal fabrications, automotive panels, spray painting masking, and laboratory tube plugging.

✅Sizing note: The size listed (A) is the small-end insertion diameter — the end that inserts into the hole. For a secure, non-falling seal, select a size one step larger than your measured hole diameter. Example: for a 5mm hole, select A=5.5mm or A=6mm for best retention.

✅ Key Features of This Silicone Snap-On Hole Plug

🔘T-Type Snap-On Design: The T-shaped profile — a flanged cap with a tapered insertion stem — presses into the hole from one side and locks in place via the flange lip. No adhesive, no tools, no fasteners required. Removable and repositionable.
🧲Food-Grade Silicone Material: Flexible, food-grade silicone (Shore 40–50) conforms to irregular hole edges for a tight seal. Resistant to UV, ozone, acids, alkalis, and corrosion — suitable for indoor and outdoor applications.
🌡️Wide Temperature Range: Rated -40°C to +250°C — maintains flexibility and sealing performance in freezing outdoor conditions and high-temperature industrial or automotive environments.
💧Waterproof & Dustproof Seal: The flanged T-profile creates a waterproof and dustproof barrier when correctly sized — suitable for IP-rated enclosure blanking, pipe end sealing, and moisture exclusion in outdoor panels.
📏25 Sizes from 2.5mm to 15mm: Covers the most common small-hole blanking requirements in 0.5mm increments from 2.5mm to 14mm, plus 15mm — order the exact size for your application without cutting or adapting.
🎨Clean Black Finish: Matte black color provides a professional, finished appearance on black panels, enclosures, and frames. Clear, white, and gray options available in the listing color selector.

🎯 Who Is This For?

⚡Electrical Enclosures & Control Panels

Blank unused cable entry holes in electrical enclosures, junction boxes, and control panels to maintain IP dust and moisture ratings and achieve a clean, professional finish.

🔧Sheet Metal & Aluminum Fabrication

Plug unused holes in aluminum extrusions, sheet metal panels, and fabricated enclosures — covering drill errors, unused mounting holes, or access points no longer in use.

🚗Automotive & Spray Painting Masking

Use as spray plug masking during painting and powder coating to protect threaded holes and bores from paint ingress — silicone withstands oven curing temperatures up to 250°C.

🧪Laboratory & Industrial Tube Plugging

Seal test tubes, pipe ends, and tube openings in laboratory and industrial settings. Food-grade silicone is chemically resistant and suitable for use with a wide range of substances.

Specification	Details
Material	Food-grade silicone rubber
Shape	T-type (flanged snap-on)
Shore Hardness	40–50
Temperature Range	-40°C to +250°C
Size Range (A)	2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 15mm
Color	Black (clear, white, gray also available)
Chemical Resistance	Acid, alkali, UV, ozone, corrosion resistant
Application	Panels, pipes, tubes, enclosures, automotive, laboratory
Installation	Press-fit snap-on; no tools or adhesive required

❓ Frequently Asked Questions

How do I select the correct size?

The size (A) refers to the small-end insertion diameter — the tapered stem that inserts into the hole. Measure your hole diameter accurately. Then select a plug size one step larger than your measured hole for a secure, non-falling fit. For example: if your hole measures 5mm, select A=5.5mm or A=6mm. If you select the exact hole size, the plug may fit loosely and not seal reliably.

Is this plug waterproof?

Yes — when correctly sized (one step larger than the hole), the T-type flange and tapered stem create a waterproof and dustproof seal. For IP-rated enclosure applications, ensure the plug is fully seated with the flange flush against the panel surface.

Can this plug be used in high-temperature environments such as automotive engine bays or powder coating ovens?

Yes — the silicone material is rated to +250°C, making it suitable for use as a spray masking plug during powder coating and paint oven curing cycles, and for automotive under-hood applications where temperatures can reach 150°C–200°C.

Can the plug be removed and reused?

Yes — the snap-on design is removable. Pull the plug out from the flange side. Silicone retains its flexibility and shape after removal, so the plug can typically be reused multiple times provided it has not been damaged or permanently deformed.

Are other colors available?

Yes — clear, white, and gray variants are available. Use the color selector in the listing to choose your preferred color. All colors use the same food-grade silicone material and are available in the same size range.

What if I need a size larger than 15mm or a custom quantity?

Sizes up to 60.6mm are available — if you need a size larger than 15mm, please contact us directly. We can also accommodate bulk orders and custom quantities. Contact our customer service team with your size and quantity requirements.

🛒 Select your size above, then add to cart. Need a larger size or bulk quantity? Contact us.

Black Silicone Snap-On Hole Plug | T-Type Blanking Bung | 2.5mm–15mm | 25 Sizes | 1 pc

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Description

Black Silicone Snap-On Hole Plug — T-Type Blanking Bung, 2.5mm–15mm, 25 Sizes

✅ Key Features of This Silicone Snap-On Hole Plug

🎯 Who Is This For?

❓ Frequently Asked Questions

Black Silicone Snap-On Hole Plug | T-Type Blanking Bung | 2.5mm–15mm | 25 Sizes | 1 pc

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