... gallon water bottle cap(two pieces) with inner foam 2.Blue or white, PE new plastic material,food ... blowout, leakage-proof 4.Applicable to within five gallons of bottled water (mineral water,distilled water, pure water, ... water) packaging use. 5.We supply different kinds of 5 gallon caps, three-in-one, two-in-one ... -in-one, recycle or one-way,with inner foam and heat sticker or not,you could choose what ...