A rather ingenious creation by a Neshaten My'leke scientist named Sel-rok, the Cus'herem is a kind of heat resistant chemical that can be sprayed onto the surfaces of vehicles or other objects to provide with the same kind of heat resistance one finds on larger vehicles such a starships without having to spend hundreds if not thousands of Rn on bulky armoured plates. Cus'herem is compilation of very pure quartz and Lunabaren sand which provides any surface it is attached to with the capability of withstanding up to 2,300 C's.
The spray adheres to any surface, and once heat is applied to it, it'll remain attached to the surface of the object for a long period of time and can only be removed by utilizing a specialized solution that can remove its bounding capabilities. Multiple layers of Cus'herem can be applied without to much worry of increased weight. As it is designed to protect against intense heat, it provides a small amount of protection from weapons such as plasma and energy.
As Cus'herem is a rather simple material to create, it is relatively inexpensive and used to coat the insides of vehicles and as part of the insulation of new buildings. However, it is toxic if inhaled as the quartz sand will attach itself to the lungs and gradually destroy tissue in the process, hazard suits are a must when working with this material; but once applied to a surface, it is safe to be around.