Cosmetic pen having a sealing arrangement

A cosmetic pen comprising:

• a hollow cap including a rear opening and an annular shoulder on an inner surface;
• a hollow plunger including, on an outer surface, a front annular groove, an annular flange adjacent to the annular groove and being configured to urge against the annular shoulder, a rear tubular member, and an annular projection spaced from the annular flange and abutted on the tubular member;
• a hollow conic member having an enlarged rear end urging against the annular flange;
• a applicator passing through both the hollow plunger and the hollow conic member to be secured thereto;
• a biasing member put on the tubular member and having a front end urging against the annular projection;
• a hollow valve put on both the annular projection and the biasing member, the hollow valve including an internal shoulder urging against a rear end of the biasing member, and a plurality of rear outlet ports adjacent to a rear end of the applicator in the hollow plunger;
• a hollow member disposed in the hollow cap and having a front end engaged a blind end of the cap, the hollow member including a flexible, rear annular recess urging against both a tapered front end of the hollow conic member and an inner surface of the hollow cap;
• a sealing ring disposed tightly between a front end of the hollow plunger and an inner surface of the hollow conic member;
• and
• a pen tube releasably secured to the hollow cap;
• wherein in a closed state of the cosmetic pen, the annular projection compresses the biasing member to urge a rear end of the hollow plunger against a rear end of the hollow valve.