“Rockets that use solid propellants, such as the space shuttle's solid rocket boosters, arrive with the propellant already stored inside them in a puttylike form.”
“But others have small foam, plastic or puttylike nodules sewn into the fabric, allowing the shorts and the padding to bend more than traditional pads around the target area.”
“The material to be processed can be in a relatively hard and stable condition and in such forms as bar, sheet, pellet, or powder, or it can be in a soft, plastic, or puttylike form.”