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Black PVC end cap installed in pipe demonstration showing secure waterproof fitAssortment of black silicone rubber plugs in various sizes 81.3mm-161.5mmBlack Silicone Rubber Hole Plug flexible end cap for pipe protection 81.3-161.5mmSide view comparison of black PVC and silicone rubber pipe plugs diameter rangeClose-up detail of black PVC pipe plug showing installation groove and rim designSize measurement chart for black hole plugs from 81.3mm to 161.5mm

Silicone Rubber Pipe Plug | T-Type End Cap Ø81.3–161.5mm

HomeDIYer
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By HomeDIYer®

Price:
$4.56 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Silicone Rubber Pipe Plug — T-Type End Cap for Large-Diameter PVC, Steel & Aluminum Pipes

Standard rubber stoppers don’t cover the large-diameter pipe and hole sizes common in industrial, construction, and plumbing applications—and foam or plastic caps lack the temperature resistance and chemical durability needed for demanding environments. This silicone rubber pipe plug fills that gap with a T-type profile that seats securely in pipe ends and panel holes from 81.3 mm to 161.5 mm diameter.

Made from food-grade organic silicone rubber, the plug is rated from -40°C to +250°C and resists corrosion, acids, alkalis, UV, aging, and static. The T-type shape provides a flanged outer face that sits flush against the pipe end or panel surface, with the plug body compressing inside the opening for a secure, airtight fit. Available in 24 diameter sizes and quantity options of 1 to 5 pieces per order.

Use it to blank open PVC pipe ends, steel pipe ports, aluminum panel holes, sewer pipe openings, and equipment ports during storage, transport, installation, or spray masking—or as a test tube stopper in laboratory and food processing applications.

✅ Fits pipe ends and round holes from Ø81.3 mm to Ø161.5 mm — T-type flanged profile — compatible with PVC, steel, aluminum, and other round pipe and hole profiles

✅ Key Features of This Silicone Rubber Pipe Plug

  • 🧲 Food-Grade Organic Silicone Rubber: Environmentally friendly, food-safe silicone—suitable for use in food processing, laboratory, and medical equipment applications as well as standard industrial and construction use.
  • 🌡️ Wide Temperature Range −40°C to +250°C: Handles extreme cold and high heat—suitable for industrial pipe masking during powder coating, high-temperature spray finishing, and outdoor installations subject to temperature cycling.
  • 🔵 T-Type Flanged Profile: The flanged outer face seats flush against the pipe end or panel surface while the plug body compresses inside the opening—provides a secure, airtight seal that resists being pushed in or pulled out under normal conditions.
  • 📐 24 Diameter Sizes (Ø81.3–161.5 mm): Covers large-diameter pipe and hole sizes not available in standard small grommet sets—select the diameter that matches your pipe inner or outer dimension from the variant dropdown.
  • ☀️ UV, Corrosion & Chemical Resistant: Resists UV degradation, oxidation, acids, alkalis, and antistatic—maintains sealing performance in outdoor, chemical, and industrial environments without hardening or cracking.
  • 📦 Quantity Options (1–5 Pieces): Order single pieces for one-off repairs or multi-packs for installation projects requiring multiple plugs of the same size.

🎯 Who Is This For?

🏭 Industrial Pipe & Equipment Port Blanking

Seal open ports on steel pipes, valves, pumps, and industrial equipment during storage or transport—the high-temperature silicone handles masking during powder coating and spray finishing without degrading.

🏗️ Construction & Plumbing Pipe End Sealing

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

🧪 Laboratory & Food Processing Applications

The food-grade silicone construction makes these plugs suitable for use as test tube stoppers and equipment port seals in laboratory and food processing environments where material safety is required.

Material Food-grade organic silicone rubber
Color Black
Shape T-type (flanged)
Diameter Range Ø81.3 mm to Ø161.5 mm (24 sizes)
Quantity Options 1, 2, 3, 4, or 5 pieces per order
Temperature Range -40°C to +250°C (-40°F to +482°F)
Chemical Resistance Corrosion, acid, alkali, UV, aging, antistatic, insulation
Compatible Pipe Types PVC, steel, aluminum, and other round pipe and hole profiles
Application Pipe end blanking, equipment port sealing, spray masking, sewer pipe plugging, test tube stoppers

❓ Frequently Asked Questions

How do I select the right diameter for my pipe?

Measure the inner diameter of your pipe end (the opening you need to plug). Select the plug diameter that matches or is very slightly larger than your pipe inner diameter—the silicone compresses to fill the opening and the flange seats against the pipe face. If your pipe inner diameter falls between two sizes, size up for a tighter compression fit.

Is this plug suitable for high-temperature spray masking during powder coating?

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 before coating and remove after curing. The T-type flange prevents the plug from being pushed fully into the pipe during handling.

Can this plug be used on PVC sewer pipes?

Yes. The silicone rubber is chemically resistant to the contents of standard sewer and drainage pipes. It is suitable for temporarily blanking sewer pipe openings during construction or repair work. For permanent or pressure-rated applications, verify the plug’s pressure rating against your system requirements.

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

Yes. The plug is made from food-grade organic silicone rubber—environmentally friendly and safe for contact with food and laboratory materials. It is suitable for use as a test tube stopper or equipment port seal in food processing and laboratory environments.

How do I install and remove the plug?

Press the plug body into the pipe opening by hand until the flange seats flush against the pipe face. The silicone compresses to grip the pipe 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.

Are these plugs reusable?

Yes. Silicone rubber maintains its elasticity and shape after repeated compression and removal. The plug can be reused in the same or a different pipe of the same diameter. Inspect the plug for cuts or tears before reuse—damaged plugs may not seal as effectively.

🛒 Select your diameter and quantity above, then add to cart.

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