PVC Blanking Plug End Cap — Drain Pipe Stopper 50mm / 75mm / 110mm / 160mm

Match the plug size to your pipe's actual outer diameter (OD), not the nominal pipe size label. Common US residential drain pipe ODs: 50mm (≈2") for sink, shower, and appliance drain lines; 75mm (≈3") for some branch and toilet lines; 110mm (≈4-3/8") for main toilet waste and soil stacks; 160mm (≈6-1/4") for main sewer connections and large-diameter drainage runs. Always measure with calipers or a tape measure before ordering.

These blanking plugs are designed for gravity-fed drain and waste pipe systems (DWV). They are generally suitable for low-pressure applications such as capping unused drain outlets, pressure-testing pipework during inspection, or sealing temporary openings. For pressurized supply lines, please contact us to confirm suitability before ordering.

PVC is generally resistant to moisture, mild chemicals, and moderate UV exposure, making it suitable for most outdoor drainage capping applications. For prolonged direct sunlight exposure, consider painting the fitting or using a UV-stabilized variant. For underground installations, PVC typically performs well in most soil conditions — verify local plumbing code requirements for buried fittings in your area.

These end caps are designed to fit standard PVC and uPVC drain and waste pipes. They are generally compatible with pipes conforming to common US and international drainage standards (such as ASTM D2665 or equivalent). If you are working with a specific pipe schedule, SDR rating, or non-standard OD, please contact us to confirm compatibility before ordering.

For a permanent, watertight seal, PVC solvent cement (pipe cement) is generally recommended and follows standard plumbing practice. For temporary applications — such as capping a pipe during construction rough-in or pressure-testing before inspection — a push-fit installation without cement is typically sufficient. Always follow local plumbing code requirements for your specific application.

In most US residential plumbing, toilet waste pipes and soil stacks are typically 3" or 4" nominal diameter. The 110mm (≈4-3/8") end cap generally fits standard 4" PVC drain pipe, and the 75mm (≈3") fits standard 3" pipe. Always verify your pipe's actual outer diameter before selecting — nominal size and actual OD can differ depending on the pipe schedule.

If installed push-fit only (without solvent cement), these plugs can generally be removed and reused. Once solvent-welded, removal typically requires cutting the fitting out of the pipe. For temporary capping during construction or testing, avoid using cement so the plug remains removable for later connection.