Sterile Umbilical Cord Clamp Non Openable are used on newborns. Individually Packed. EO Sterilized. Ours umbilical cord clamp is constructed of smooth, durable plastic to hold the cord safely and securely without scratching Smart Care Sterile Umbilical Cord Clamp Non Openable are used on newborns, Ours umbilical cord clamp is constructed of smooth, durable plastic to hold the cord safely and securely without scratching babies' skin.