The Sealed Eyepatch is a new Head Armor in Monster Hunter World. You can craft it with Black Bandages from the event quest “Scrapping with the Shamos”.
This event quest is very simply and only requires you to slay 13 Shamos. They can be found near the first camp in the Coral Highlands. Take the right path and you will find exactly 13 Shamos in two locations.
The Sealed Eyepeatch comes with Lvl 1 Fire Resistance and two decoration slots, one being Lvl 2.