... ringA: 8PE1 engine piston ring1. Piston ring Material : Cast iron , Alloy , Steel2. Piston ring Feature : 1 Chrome-plating ,2 Line ... phosphating , Alfin ,Double Alfin , No Alfin , Graphite , Oil cooling channel , Sn(tin) plated , Steel Piece , Top Oxidization , Skirt Graphite ... Printed , Three or Four Ring Grooves ,Ceramic Spraying4. We can offer you The 1 Steel ...