Black Plastic Blanking End Caps: Square/Rectangle Tube Pipe Inserts Plug Bungs 🔌
Seal and protect square/rectangle pipes, tubes, and fittings with our black PP plastic blanking end caps. Available in dozens of square (19*19mm~100*100mm) and rectangle (10*20mm~60*100mm) sizes, these push-fit inserts are tough, wear-resistant, and easy to install—perfect for DIY projects, industrial use, or home hardware to block dust, debris, and prevent pipe damage.
Square/Rectangle Black Plastic Pipe End Cap Specifications 📋
| Attribute |
Details |
| Product Type |
Square/Rectangle Plastic Blanking End Cap / Tube Pipe Insert Plug Bung |
| Material |
High-quality PP Plastic (good toughness, non-deformable, wear-resistant) |
| Color |
Matte Black (blends with most pipe/tube finishes, hides scratches) |
| Shapes |
Square & Rectangle (fits standard square/rectangle tubes) |
| Square Sizes (W*H) |
19*19mm, 20*20mm, 22*22mm, 25*25mm, 28*28mm, 30*30mm, 38*38mm, 40*40mm, 50*50mm, 60*60mm, 80*80mm, 100*100mm, 10*20mm, 15*30mm, 13*26mm, 20*40mm, 25*38mm, 25*50mm, 30*50mm, 30*60mm, 20*30mm, 40*60mm, 40*80mm, 50*100mm |
| Rectangle Sizes (W*H) |
10*20mm, 10*30mm, 10*40mm, 10*50mm, 13*26mm, 15*30mm, 20*30mm, 20*40mm, 20*50mm, 25*38mm, 25*40mm, 25*50mm, 30*40mm, 30*50mm, 30*60mm, 30*70mm, 40*50mm, 40*60mm, 40*80mm, 45*75mm, 50*100mm, 60*100mm |
| Recommended Pipe Wall Thickness |
0.5mm – 2mm (for thicker pipes: trim clamping position before installation) |
| Installation Method |
Push-fit: Align with pipe end, push firmly—no tools, glue, or hardware needed |
| Key Function |
Blanking/sealing square/rectangle pipe ends, dust/moisture protection, pipe edge safety |
Why Choose Our Square/Rectangle Plastic End Caps? 🌟
📏 Wide Size Range for Every Need
Covers dozens of square/rectangle sizes (10*20mm~100*100mm)—fits standard steel, aluminum, or plastic tubes for furniture, industrial, or DIY projects.
💪 Durable PP Plastic Build
Made from high-grade PP plastic with excellent toughness—resists deformation, wear, and impact. Won’t crack or break even with regular use.
🔧 Tool-Free Push-Fit Installation
No drills, adhesives, or skills required! Just align the cap with your square/rectangle pipe end and push firmly—it stays secure and won’t fall off.
🚫 Dust & Moisture Sealing
Creates a tight, precise seal to block dust, dirt, water, and debris from entering pipe ends—prevents rust, corrosion, and internal damage.
Ideal Uses for Square/Rectangle Plastic End Caps 🛠️
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Furniture: Cover square/rectangle legs of chairs, tables, stools, or storage racks (prevents floor scratches and sharp edge safety).
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Industrial Pipes: Seal unused square/rectangle steel/aluminum tubes in factories, warehouses, or construction sites.
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DIY Projects: Finish edges of custom shelves, plant stands, or outdoor structures made with square/rectangle tubing.
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Electrical Conduit: Cap exposed ends of square/rectangle electrical conduit to keep wires protected from dust and moisture.
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Automotive/Mechanical: Cover square/rectangle tubes in car parts, machinery, or tools to prevent dirt buildup and damage.
FAQs About Square/Rectangle Black Plastic End Caps ❓
How do I choose the right size square/rectangle end cap for my pipe?
Measure the outer width and height of your square/rectangle pipe (not inner dimensions) and select a cap with matching W*H. For example, a pipe with 25*25mm outer size needs a 25*25mm square cap. Note: Cap dimensions listed are outer diameters—match to your pipe’s outer size!
Can these plastic caps be used outdoors?
Yes! PP plastic is weather-resistant—these caps won’t fade, crack, or degrade in rain, sun, or cold temperatures. They’re perfect for outdoor furniture or exposed pipes.
What if my pipe’s wall thickness is over 2mm? Will the cap still fit?
For pipes thicker than 2mm, trim the cap’s inner clamping edges slightly with scissors or a utility knife to create more space. Then push or gently tap the cap into place—it will still form a firm seal.
Are these end caps reusable if I need to remove them?
Absolutely! Gently pry the cap off with a flathead screwdriver (avoid sharp force to prevent damage). The PP plastic retains its shape, so you can reuse it on the same or similar-sized pipes.
What’s your return policy if the caps don’t fit my square/rectangle pipes?
Unused, untrimmed caps can be returned within 7 days for a full refund (return shipping paid by buyer). Contact us first with your pipe’s W*H measurements—we’ll help you find the perfect size!
How fast will my end caps ship, and where do you ship?
We ship within 2 business days via USPS (US-only) with tracking. Most orders arrive in 3-5 business days (continental US). We use your Shopify order address—please confirm accuracy at checkout!
Payment & Shipping for Square/Rectangle Plastic End Caps 💳🚚
Secure Payment Options
- PayPal (fast, encrypted checkout)
- Visa, Mastercard, American Express
- Shopify Pay (one-click, secure storage)
US Shipping Details
- Processing time: 1-2 business days post-payment
- Carrier: USPS First Class/Priority Mail (tracking included)
- Delivery: 3-5 business days (continental US); 5-7 days for Alaska/Hawaii
- Packaging: Resealable bags (small quantities) or boxes (bulk orders) to prevent damage
Quality Guarantee for Square/Rectangle Plastic End Caps ✅
All our black square/rectangle plastic blanking end caps undergo strict quality checks for fit, toughness, and seal tightness. If a cap is defective, doesn’t fit as described, or breaks prematurely, we’ll replace it or issue a full refund. Trust our durable PP plastic caps for long-lasting pipe and furniture protection!
