Large “O” Ring  [Item # 01180]
Replacement barrel seal
Accessories / Air Rifle Spare Parts / Large “O” Ring
Replacement seal for break barrel air rifles for keeping pressure concentrated behind the pellet.
Air Rifle Barrel O-Ring (Large)

Will fit the following air rifles:

Hunter Pro, Hunter Sport, Hunter Elite, Varmint Hunter, Viper, Shadow Sport MOdels - Barrel side o-ring, Maxima, Hunter 440, Hunter 220 and Shadow 1000 rifles. (Will also fit Big Cat 07-08 models-Barrel side o-ring)