Expanded teflon valve rod filler is another brand-new product of expanded teflon materials．It has all the features for expanded teflon sealing ribbons．It has a round cross section．Used to seal the filler of the valve rod． Automatic moulding，speedy and easy mounting and filling．Like twining a spring，twine it on the valve rod，then press the cover，and the filler will be formed automatically，giving a complete and precisely compactsealing ring without any additional processing． Pressure working：1 9.6Mpa． Temperature working：-248℃～31 5℃ Superior filling performance allows to fill up the defects which may creat leakages． Very strong interchangeability：just to have products with several typical specifications，they can replace manykinds of similar design—finalized asbetos packing． Agelng-resislant，every to purchase and store．