Plastic caps and plugs are utilized in many appliance applications. The wide variety of sizes, shapes, and colors offered make them suitable for thread protection, packaging component pieces, finishing, and product identification. Their snug fit reportedly provides an excellent means of keeping foreign contaminants off of a product. Custom molding is available, and a choice of several formula hardnesses is offered. Products range from 0.062- to 6-in (1.57- to 152-mm) diam.