570 oil drain plug seal

Is there supposed to be a sealing washer on the oil drain plug? Manual states to replace it when you change the oil. Drained my oil today, and no seal on the drain plug. If it is supposed to have one, does anyone know the part number. Having trouble finding it on the Polaris website. The bike is a 2015 570 SP touring model.

570 oil drain plug seal

Is there supposed to be a sealing washer on the oil drain plug? Manual states to replace it when you change the oil. Drained my oil today, and no seal on the drain plug. If it is supposed to have one, does anyone know the part number. Having trouble finding it on the Polaris website. The bike is a 2015 570 SP touring model.