Tau reference sheet 40k mmo
History. Poly-paraphenylene terephthalamide – branded Kevlar – was invented by Stephanie Kwolek while working for DuPont.  In anticipation of a gasoline shortage, in 1964 her group began searching for a new lightweight strong fiber to use for light but strong tires.  Multi-purpose thread sealant made with DuPont™ KEVLAR® for use on metals including steel, stainless steel, brass, copper, aluminum, and on plastics including PVC, CPVC and ABS. Kevlar, also known as Twaron and poly-paraphenylene terephthalamide, is a synthetic fibre that is five times stronger than steel, weight for weight. Kevlar is very heat resistant and decomposes above 400 °C without melting. It is usually used in bulletproof vests, in extreme sports equipment, and for composite aircraft construction.