It is an authentic OEM supplied component which is designed for Hitachi nailers. This is one of the gaskets for the exhaust piece. It is a high-quality replacement for a compressed, cracked or a missing part that was installed on a new tool. When performing this repair, it is advised to refer to the parts diagram for your model to ensure the correct procedure. Note, this gasket is made of durable composite material and is sold as an individual item.
