Industrial stamps are specially formulated with quick dry inks which are ideal for repetitive marking on non-porous surfaces such as metal, plastic, glass, certain cloth, leather and coated paper. No stamp pad is required! These industrial stamps have a proprietary ink formulation that shortens drying time, and once completely dry, the impression is resistant to water and heat. (Performance may vary depending on the surface stamped.) The rubber die is designed to be durable and chemical resistant, making it the stamp of choice in harsh manufacturing environments.