References to silicon carbide heating components exist in the early 20th century whenever they ended up produced by Acheson's Carborundum Co. while in the U.S. and EKL in Berlin. Silicon carbide offered improved operating temperatures in comparison with metallic heaters. The outer thermal safety layer of NASA's LOFTID inflatable heat https://www.facebook.com/permalink.php?story_fbid=pfbid0bmCEXqFvYNJMUmM3q2FWZWS1XLvNWxNHWYwyQzMqiLF5ce44yZouXSMJdeznUkZyl&id=61562415773754&__cft__[0]=AZU7CDEaqmc58Tcxj3z6y67nzie6WO9tFVJ9dpHuJbDLgr6u1e4iO7HCpcSuGkdvHF8HUtM-RT6aOt7I-7HT_6nSodDisN7ByAAafcUkQKTQhSJUWNZY2gHj9oePSI5JTWZZuMv5991ySttpXKrNIgUuG6VBKCS-vpVRvMgkk6j697lcNsBnS7hL-mLfUacU5mk2i-BAtB9ej_AuUAmcIp7B&__tn__=%2CO%2CP-R