Plastic Cap Illustration - Generic Screw-On Lid Design #3751993 (License: Personal Use)

This black-and-white line illustration depicts a generic cylindrical plastic cap, commonly used for bottles, jars, or containers. One side features evenly spaced vertical ridges to enhance grip during opening or closing, while the top surface is smooth with subtle contour lines indicating curvature. The perspective is isometric, emphasizing three-dimensionality without shading.

Used in product documentation, e-commerce listings, educational materials, or icon libraries where a neutral, scalable representation of a cap is needed; matches user intent for technical illustrations, packaging design references, or UX asset libraries.