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Exposed tube ends, cut rods, and bare threaded studs are magnets for rust, dust, and accidental scratches. These flexible PVC rubber end caps snap on in seconds, sealing the end cleanly and protecting whatever is underneath — no glue, no tools, no fuss.
Available in 15 sizes from 2.5mm to 19mm (0.10" to 0.75") and three colors — Black, White, and Transparent — these caps fit a wide range of round tubes, rods, and threaded fasteners. The flexible rubber stretches slightly for a snug, non-slip grip that stays put in everyday use.
Use them on furniture legs, curtain rod ends, threaded studs, shelf pins, hobby project axles, wire harness ends, pneumatic fittings, and more. Order 1 piece to test the fit, or stock up with 10, 50, or 100-piece packs for job-site or workshop use.
Cap chair legs, table feet, and shelf pins to prevent floor scratches and give a finished, professional look to exposed metal ends.
Protect threaded studs, bolt ends, and cut rods during storage or transport. Keeps threads clean and prevents accidental injury from sharp edges.
Fit small-diameter caps (2.5mm–5mm) onto axles, pins, and frame tubes in RC cars, model aircraft, and 3D-printed assemblies.
Use in bulk to cap pipe ends, conduit, and pneumatic fittings on job sites. Transparent caps allow quick visual inspection without removal.
| Material | PVC Rubber (flexible, waterproof, corrosion-resistant) |
|---|---|
| Shape | Round dome / closed end cap |
| Available Sizes (Inner Diameter) | 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm, 6.5mm, 7mm, 8mm, 10mm, 12mm, 14mm, 16mm, 19mm |
| Colors Available | Black, White, Transparent |
| Key Properties | Good elasticity, wear-resistant, non-slip, waterproof, corrosion-resistant |
| Pack Quantities | 1 Pcs, 10 Pcs, 50 Pcs, 100 Pcs (select variant) |
| Typical Applications | Tube ends, rod ends, threaded screws/studs, furniture legs, hobby project parts, wire harness ends, pneumatic fittings |
| Installation | Push-fit — no glue or tools required |
Measure the outer diameter (OD) of the tube, rod, or screw you want to cap. Select a cap whose nominal size matches or is very slightly smaller than your part's OD — the rubber stretches for a snug fit. For example, a 6mm rod typically fits a 6mm cap well. If you're between sizes, go down to the next smaller size for a tighter grip.
No — these are push-fit caps. The rubber's elasticity creates a friction grip that holds securely in normal use. If you need to remove them, simply pull or pry them off with a flathead screwdriver. No adhesive residue to clean up.
Yes, for light outdoor use. The PVC rubber is waterproof and handles humidity and occasional splashes well. For prolonged direct sunlight, black caps have better UV stability. White and transparent variants may discolor or harden over time with extended UV exposure. For permanent outdoor installations, consider replacing them periodically.
Transparent PVC rubber may develop a slight yellow tint after months of UV or heat exposure. For indoor use, they typically remain clear. If long-term clarity is important, black or white caps are a more stable choice.
Yes, but we recommend deburring the cut end first. Sharp burrs can cut through the rubber during installation. A quick pass with a file or sandpaper will protect the cap and make installation easier. Once installed, the rubber protects hands and surfaces from the sharp edge.
No — these are standard PVC rubber caps for general mechanical protection. They are not certified for food contact or potable water applications. For food or medical use, look for FDA-rated silicone caps.
Currently each variant is a single size. If you need an assortment of sizes, order individual variants in the quantities you need, or contact us — we can discuss custom packs for larger orders.
