This is a Cub cadet Seal tube 723-0413. It fits 

Cub Cadet 063 (190-063-000) - Yardman Twin Bagger - Grass Catcher Assembly
Cub Cadet 083 (190-083-100) - Yardman Triple Bagger - 083 Grass Collector
Cub Cadet 103 (190-103-100) - Yardman Twin Bagger - Grass Catcher Assembly
Cub Cadet 306 (190-306-100) - Cub Cadet Triple Rear Bagger - Cover Assembly
Cub Cadet 312 (190-312-100) - Cub Cadet Triple Rear Bagger - Cover Assembly
Cub Cadet 330 (190-330-100) - Cub Cadet Mower Rear Bagger - Cover Assembly
Cub Cadet 335 (190-335-100) - Cub Cadet 46" Triple Rear Bagger - Cover Assembly
Cub Cadet 367 (190-367-100) - Cub Cadet Triple Rear Bagger - Cover Assembly
Cub Cadet 445 (190-445-100) - Cub Cadet Triple Rear Bagger - Cover Assembly
Cub Cadet 601 (190-601-100) - Cub Cadet Twin Bagger - General Assembly
Cub Cadet 602 (190-602-100) - Cub Cadet Twin Bagger - General Assembly