I've heard that a bench-capper would seal twist offs, but not a hand-capper. So I would have to agree with the previous post based on what I've read. I used to use a hand-capper, but never tried twist offs. So I can't speak first hand. Best to go get some bottles. If you have a local recycling center, you can usually swing by and pick up as many as you want for free. I've also used 12oz or 20oz plastic coke bottles on occasion that have worked fine.