Elastic sealing structure is being used to achieve automatic compensation of both axial and radial      displacement, so that jamming of the shaft can be avoided when system goes under big external      shock force. Sealing performance is thus guaranteed.
 The shaft works without abrasion due to its fluid sealing structure.
 Maintenance of static and dynamic sealing rings can be done offshore in a quick and easy way, which      saves cost and increases on-duty time of the ship.
 No grease is required.
 The product is strong in anti-corrosion, and its life span is same as that of the ship.