The JM-8(J) series is a multi-spring mechanical seal structure. The seal’s connection dimensions comply with DIN24960 and GB65556 standards. It is suitable for DIN24960 and GB6556 centrifugal pumps and other rotating shaft equipment. This series of seals have a compact structure and an integrated ring design, which makes the seals have good resistance to compression a heat deformation, and ensures that the end face deformation is minimized under high pressure. This model of product derived JM-8U(J),JM-8UV(J),JM-8BKC(J) and other series products, which are respectively applied under different working conditions.