NAME: AIR COMPRESSOR PISTON RING BRAND: JIN LING DIAMETER :42, 47, 48, 51, 52, ... ,68,70,75,80,82,90,100,105 Nanjing Ruiying Piston Ring Manufacturing Co.,Ltd. If you did not find the ... want ,we can manufacture the piston ring according to your sample or product draft. Rigid link-to-link control is to seek increasing perfection.