Detailed introduction to Piston Ring Carrier:

Piston Inserts may also be called other names including, but not limited to, "Ring Carriers, " or "Alfin Inserts. " Ni-resist inserts are alloyed cast iron rings, composed of the material known as Ni-resist, of the chemical  Composition: 13.5%-17.5% Ni (nickel), 5.5%-8.0% Cu (copper), 0.8%-2.0% Cr (chrome), 0.5%-1.5% Mn (manganese), 1.0%-3.0% Si (silicon), 2.4%-3.0% C (carbon). The cast iron composition is produced primarily to the material specifications of the American Society for Testing and Materials ("ASTM"), ASTM A-436 Type 1.