Oil Spill Absorbent Sock Oil absorbent Sock, made of 100%polypropylene, with loop or clamp, is used to coil around the machiner to contain and absorb any oil leaks and drips. They are also used to form a ring around larger spills to act as an absorbent barrier. (1) Clasp in ends (2)Good oil absorption quantity. (3)Economic, effective and pollution-free.