A grommet is a ring inserted into a hole through thin material, such as fabric. Grommets are generally flared or collared on each side to keep them in place, and are often made of metal, plastic, or rubber.
They may be used to prevent tearing or abrasion of the pierced material, to cover sharp edges of the piercing, or both. A small grommet may also be called an eyelet, used for example on shoes for lacing purposes.
Grommets are used to reinforce holes in leather, cloth, shoes, canvas and other fabrics. They can be made of metal, rubber, or plastic, and are easily used in common projects, requiring only the grommet itself and a means of setting it with a punch, a metal rod with a convex tip.
A simple punch, often sold with the grommets can be struck with a hammer to set the gormmet. There are also dedicated grommet presses with punch and anvil, as shown in the picture, ranging from inexpensive to better-quality tools, which are somewhat faster to use.
They are used to strengthen holes; in footwear for boot and shoe laces, in laced clothing such as corsets, and in curtains and other household items that require hanging from hooks, as when they are used in conjunction with tensioner rods for shower curtains. The grommet prevents the cord from tearing through the hole, thereby providing structural integrity.
Small grommets are also called eyelets, especially when used in clothing or crafting. Eyelets may be used purely decoratively for crafting. When used in sailing and various other applications they are called cringles.
Grommet is Rubber product that protect Wire Harness which pass through the car panel.