Haggis closures

I asked a similar question a while back, and got a few answers. The one I went for (fencing hog rings) works ok, to a point, but is time consuming and becomes a real PITA if I get a slightly thicker batch of beef bung. Soooo.
Does anybody know of a machine that will reliably seal a beef bung (even something that is hand operated as long as it's quick and simple) without having to fiddle it in, crimp a bit, fiddle a bit more in etc. etc.
Basically I want something that works along the lines of the old bag sealing machines, where you slide the material to be sealed between two angled plates, and at the bottom is some kind of contrivance that places a seal on. (I know my description is pants, so something that works like one of these http://www.paperstone.co.uk/prod_22860_ ... oC50vw_wcB )
I'm also open to other suggestions, so if you have a different way of doing it then I'm all ears.
I've tried string, and can't get it to stay on reliably. The hog rings are reliable but when I'm looking at commercial production levels, just not viable in terms of time.
Anyone any ideas?
Does anybody know of a machine that will reliably seal a beef bung (even something that is hand operated as long as it's quick and simple) without having to fiddle it in, crimp a bit, fiddle a bit more in etc. etc.
Basically I want something that works along the lines of the old bag sealing machines, where you slide the material to be sealed between two angled plates, and at the bottom is some kind of contrivance that places a seal on. (I know my description is pants, so something that works like one of these http://www.paperstone.co.uk/prod_22860_ ... oC50vw_wcB )
I'm also open to other suggestions, so if you have a different way of doing it then I'm all ears.
I've tried string, and can't get it to stay on reliably. The hog rings are reliable but when I'm looking at commercial production levels, just not viable in terms of time.
Anyone any ideas?