... and hardness,high temperature resistant. Graphite rings used for aluminium billet casting ... graphite ring4.High temperature resistant5.Good corrosion resistance6.Long service lifeDia.80,Dia.85,Dia.90,Dia.100,Dia.110,Dia.120,Dia.135,Dia.152,Dia ... .178 Besides general specification, we offer products according to the customers requirements. Graphite ...