Originally developed for use in cardiac surgery. Ideal for contact with blood. Flexible and resilient with established performance in peristaltic pump applications. Meets ISO 10993 and meets FDA standards for biocompatibility, and meets USP Class VI criteria. Can be sterilized by radiation, ethylene oxide, steam or chemical methods. Durometer hardness: Shore A, 66. Working temp. range -55°F. to 165°F. Priced per foot; sold in 10 ft. intervals only.