Shaft sealing structure

A shaft sealing structure arranged between a rod configured to be driven within a predetermined fluid and move in an axial direction, and a holder in which the rod is accommodated, the shaft sealing structure comprising:

• a V-packing;
• a first guide bush attached to an inner circumference of the holder;
• and
• a scraper arranged at an end of the holder, wherein the V-packing is formed of a top portion formed to be thick-walled, an inner side skirt portion formed to be thin-walled and extending diagonally inward from the top portion, and an outer side skirt portion formed to be thin-walled and extending diagonally outward from the top portion,
• the inner side skirt portion slidably contacts an outer surface of the rod at a distal end of the inner side skirt portion, and the outer side skirt portion abuts against an inner surface of the holder at a distal end of the outer side skirt portion, and
• the top portion is sandwiched between the scraper and the first guide bush, and the inner side skirt portion and the outer side skirt portion are freely deformable inside a space formed between the first guide bush and the scraper.