This item is marked as inactive, which means it is probably not in the current version of the game (but maybe it used to be). Inactive items do not show up in searches.
Bloody Mail Helm
Head
Heavy Chain
16 Armor
+3 Stamina
+3 Constitution
+40 Hit Rating
Class: Warrior, Cleric, Paladin, Dire Lord, Ranger
Weight: 1.4
This is up-to-date with the current patch (0.15.652 - 21 days old)