To unseal an Item, a player must go to a Bartender NPC and with the necessary items.
Players can find out what items are needed to Unseal an item by speaking to a Bartender NPC and selecting to unseal, putting the item from inventory into the middle box of the window that pops up, then selecting "Unseal".
Usually the requirements for unsealing are a certain amount of Gelt and a Seal Dissolution Pearl. If the player does not have all required items, he/she can usually obtain them by either fishing or buying the item off of another player.!!!Notice the ReSeal Pearl locks only one per slot.
Having all of the requirements usually unseals all seals on the item.