White Silicone Rubber Hole Plug | T-Type Snap-On Bung 2.5–60mm

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Sale price$2.20 USD
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In stock (500 units), ready to be shipped

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Description

White Silicone Rubber Hole Plug — T-Type Snap-On Bung for PVC, Steel & Aluminum Pipes, 2.5–60 mm

Small-diameter pipe ends, panel holes, and equipment ports need a plug that seals cleanly, resists chemicals and heat, and stays in place without adhesive or tools. This white silicone rubber hole plug uses a T-type snap-on profile—the small end inserts into the hole and the flanged head seats flush against the surface, creating a waterproof, airtight seal by compression alone.

Made from food-grade silicone rubber (Shore hardness 40–50), the plug is flexible enough to compress into holes with minor size variation and firm enough to hold its position under normal conditions. Rated from -40°C to +250°C with resistance to UV, corrosion, acids, and alkalis. Available in 25 sizes from 2.5 mm to 60.6 mm (dimension A—the plug body diameter). Color: white.

Size selection tip: Select a plug size one size larger than your measured hole diameter. The silicone compresses to fill the opening and the flange prevents the plug from passing through—choosing the exact measured size may result in a loose fit or the plug falling out.

Fits round holes from 2.5 mm to 60.6 mm (dimension A) — T-type flanged snap-on profile — compatible with PVC, steel, aluminum, and other round pipe and panel hole profiles

✅ Key Features of This White Silicone Rubber Hole Plug

  • 🧲 Food-Grade Silicone Rubber: Flexible, food-safe silicone—suitable for food processing, laboratory, and medical equipment applications as well as standard industrial and plumbing use. White color suits clean-room and food-contact environments.
  • 🔵 T-Type Snap-On Profile: The small end inserts into the hole; the flanged head seats flush against the surface. Compression fit holds the plug in place without adhesive—the flange prevents the plug from being pushed through the hole.
  • 💧 Waterproof & Airtight Seal: Silicone body compresses against the hole wall to create a waterproof, airtight seal—suitable for sealing pipe ends, sewer openings, and equipment ports against moisture, dust, and debris ingress.
  • 🌡️ Wide Temperature Range −40°C to +250°C: Handles extreme cold and high heat—suitable for spray masking during powder coating and high-temperature finishing as well as standard indoor and outdoor applications.
  • 📐 25 Sizes (2.5–60.6 mm): Fine-increment sizing from 2.5 mm to 15 mm in 0.5 mm steps covers the most common small-diameter pipe and panel hole sizes—select the size that is one step larger than your measured hole diameter.
  • ☀️ UV, Corrosion & Chemical Resistant: Resists UV degradation, oxidation, acids, and alkalis—maintains flexibility and sealing performance in outdoor, chemical, and industrial environments without hardening or cracking.

🎯 Who Is This For?

🏭 Industrial Pipe & Equipment Port Sealing

Blank open ports on PVC pipes, steel pipes, valves, and equipment housings during storage, transport, or spray masking—the high-temperature silicone handles powder coating and finishing oven temperatures without degrading.

🧪 Laboratory & Food Processing Use

Food-grade white silicone is suitable for test tube stoppers and equipment port seals in laboratory and food processing environments—the white color is standard in clean-room and food-contact applications.

🏗️ Construction & Plumbing Pipe End Blanking

Seal open PVC pipe ends, aluminum panel holes, and sewer pipe openings on construction sites—keeps debris, insects, and moisture out of pipe runs during installation before final connections are made.

Material Food-grade silicone rubber
Color White
Shape T-type (snap-on flanged)
Hardness Shore 40–50
Size Range (Dimension A) 2.5 mm to 60.6 mm (25 sizes, 0.5 mm increments from 2.5–15 mm)
Temperature Range -40°C to +250°C (-40°F to +482°F)
Chemical Resistance UV, corrosion, acid, alkali, aging resistant
Compatible Pipe Types PVC, steel, aluminum, and other round pipe and panel hole profiles
Application Pipe end blanking, panel hole sealing, spray masking, sewer pipe plugging, test tube stoppers, equipment ports

❓ Frequently Asked Questions

How do I select the right size?

Measure the diameter of the hole you need to plug (dimension A in the product images). Select a plug size that is one step larger than your measured hole diameter—for example, if your hole measures 5 mm, choose the 5.5 mm plug. The silicone compresses to fill the hole and the flange prevents the plug from passing through. Choosing the exact measured size may result in a loose fit.

What is the difference between dimension A and the overall plug size?

Dimension A is the diameter of the plug body—the part that inserts into the hole. The overall plug is larger due to the flanged head that sits on the surface outside the hole. When selecting a size, match dimension A to your hole diameter (one size up), not the overall plug diameter.

Is this plug suitable for high-temperature spray masking?

Yes. The silicone is rated to +250°C, which covers the oven temperatures used in most powder coating processes (typically 160–200°C). Press the plug into the pipe end or hole before coating and remove after curing. The T-type flange prevents the plug from being pushed fully into the pipe during handling.

Is the white silicone food-grade and safe for laboratory use?

Yes. The plug is made from food-grade silicone rubber—safe for contact with food and laboratory materials. The white color is standard in food processing and clean-room environments. It is suitable for use as a test tube stopper or equipment port seal where material safety is required.

How do I install and remove the plug?

Insert the small end of the plug into the hole by hand and press until the flange seats flush against the surface. The silicone compresses to grip the hole wall. To remove, grip the flange and pull firmly—the plug releases cleanly without tools. The silicone retains its shape after removal and can be reused.

Can I order custom sizes or larger quantities?

If you need a size not listed in the variant options, or require a larger quantity than shown, contact our customer service team—custom sizes and bulk orders can be accommodated on request.

🛒 Select your size above, then add to cart.

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