Sealing packing

A sealing packing for producing a seal between an apparatus housing and a drive shaft, wherein the sealing packing comprises:

• a core portion,
• a housing which is wrapped around the exterior of the core portion and has a rounded rectangular cross-sectional shape, wherein the housing comprises a plurality of fiber threads woven together with each other, and a barrier sealant filled between the plurality of fiber threads and between the core portion and the housing;
• and
• a lubricating layer which covers the housing,
• characterized in that
• the core portion has a cross-sectional area of 15-75% of the cross-sectional area of the sealing packing;
• the core portion comprises a central supportive reinforcing core with an X-shaped cross-section and a plurality of elastic supplementing cores that contact the central supportive reinforcing core;
• the central supportive reinforcing core has a central portion extending along the central axis of the core portion and four support portions extending outwardly from the central portion;
• each support portion of the central supportive reinforcing core points to each corresponding corner of the housing.