Welcome to the Bunnings Workshop community. Thank you so much for joining us and sharing your question about sealing laminated flooring.
If it is artificial laminated flooring, I suggest not putting any polyurethane sealing on it. Would it be possible for you to post a photo of the floor? This will give our members a better idea of what it looks like. Once we see it, we will be able to give you a comprehensive recommendation on what to use on your floor.