1 Piece Cap O'ring for Nature 2 Pro G Plus W13061, 13061 Replacement Part O-401 **This is not for the 2 piece cap, 1 piece only** Nature 2 Pro G Plus 13061, W13061 O-ring For 1 Piece Cap W13061 THIS IS A NATURE 2 FEEDER LID O-RING FOR THE ONE PIECE LID Quality TORK Replacement Part O'ring O-401