nylon 66 whose melting poit is 255 degree Celrius can be use ... Qualified TestsFDA,RoHS,REACH,EN71,EEC,PAHs Nylon 66 filament is the heat-resistant, good low temperature performance product. And it's also ... used for comb,toothbrush, cleaning brush and industrial use, etc. nylon 66 filament for making the cover of wire pipe