An end cap for a PVC pipe is a fitting used to seal or close the open end of a PVC pipe, preventing the flow of materials or air. Here's a detailed description:

1. Material: Made from durable, high-density PVC (Polyvinyl Chloride), which is resistant to corrosion, chemicals, and weathering.

2. Shape: Typically round or cylindrical, designed to fit snugly onto the end of a PVC pipe.

3. Function: The primary function is to seal the open end of a pipe, preventing water, gas, or other substances from escaping or entering the pipe. It can also be used to close off the pipe when it's not in use.

4. Design Features:

   • Smooth, Flat Surface: The cap usually has a flat, smooth surface on top that fits flush against the pipe’s end.

   • Snug Fit: It has an interior diameter that matches the outer diameter of the pipe, ensuring a secure fit.

   • Some Caps: May have grooves, threads, or a rubber seal for a more secure or waterproof fit.

5. Size Variability: Available in various sizes to fit different diameters of PVC pipes, from small household plumbing to large industrial pipes.

6. Color: Most end caps are white or gray, matching standard PVC pipes, but they may also be available in black or other colors for specific applications.

7. Installation: Easy to install, typically just requiring a firm push to snap the cap onto the pipe, though some may require glue for a permanent seal.

8. Uses: Commonly used in plumbing, irrigation, and construction applications to prevent debris or contaminants from entering the pipe or to temporarily seal it during maintenance or installation.