Kevlar fiber braided packing is made of Du Pont's Kevlar yarn impregnated with PTFE dispersion and processed with lubricant,brided into square cross section. As the strength and module of Kevlar is as high as the steel-like strength. So this packing compared with other kinds of braided packing, they can resist more serve media and higher pressure. It can be installed separately or as end rings with other kinds of packing to combine different characteristics into packing set.
This packing is mainly used as substitite of asbestos in pump systems.  Its property is better than asbestors, and it covers all the services ranges which asbestos packing provided and more. Under very bad conditions where ordinary asbestos packing can not provided the satisfied effect. But this packing has long service. It is usually applied to pulp factory, sand slurry, tin mine and feed water pump of power plant etc.   
Main specification of Kevlar fiber braided packing:

Temperature	200~280°C
Pressure	2~10MPa
PH range	2~13
Density	1.4 g/cm3
Velocity	2~18m/s