The following are IP rating:
IP22: Non-waterproof, available indoor.
Ip65: silicone glue or epoxy resin, can prevent the splashing water invade, available indoor.
IP67: Silicone tube, hollow, can prevent the big wave water invade; available indoor and outdoor.
IP68: Silicone tube +silicone gel or silicone extrusion molding, completely prevent dust and water invade; available indoor,outdoor and water