This carbbon fibre ring has achieved GB/T19001-2000 idt ISO 9001:2000 certifitation ; 1.This cabon fibre seal ring has achieved GB/T19001-2000  idt  ISO  9001:2000  certification ;

2.Manufacture License of Sepecial Equipment People's Republic of China;

3.Available in a varity of sizes;

Carbon Fiber Seal Ring