Slingshot rubber
The slingshot rubber, together with the body of the slingshot, is the main component that makes the slingshot capable of firing a projectile (e.g. a steel or plastic ball or pebble). The slingshot rubber is a consumable material that can tear over time and then a replacement slingshot rubber must be purchased. Slingshot rubbers can be bought ready-made, or you can buy a semi-finished product to make a replacement slingshot rubber to suit your requirements.