WEALSON Flexible Graphite Ring,by pure flexible graphite through molded made lined metals, reinforced material stainless steel foil, net. To prevent the fill material has been slow oxidation, with stainless steel cap design is necessary. In general, the cross-section for the square packing rings, but also for the wedge-shaped or V-shaped. It has all the characteristics of expanded graphite and can withstand intense alternating temperature and pressure, valves and all kinds of static sealing the ideal filler. Grade: W201D Die formed graphite rings W201R Reinforced graphite ring Carbon content >=99% Contain no rubber or binder,100% asbestos free Temperature: -200~+3300 in non-oxidizing Min.cross section:3mm Max.diameter:1000mm In addition,we can offer Flexible Graphite Foils,Flexible Graphite Tape,Flexible Graphite Sheet,Reinforced Graphite Sheet,Spiral Wound Gaskets, Flange Gasket,Gasket Materials,Graphite Packing,ect. You can visit our website www dot wealson dot com or contact me sales at wealson dot com We will be sure to send you our best price! Miss Danny Zhao Zaozhuang Wealson Enterprises Co.,Ltd.