It is a braided packing made of PTFE yarn containing graphite and anti-corrosive lubricant. It is recommended for shafts for almost all chemicals. Stability and long service lift are achieved by low friction coefficient. It has great fear strength and high thermal conductivity. This self-lubrication packing does not score the shaft and minimizes sleeve replacement cost. It can be used to seal alkalis, solvents, water, steam, acids except strong oxidizing acids (aqua regia, fuming nitric acid, fuming nitric acid, fuming sulfuric acid, etc.) for centrifugal pumps, autoclaves, agitators, mixers, etc.