As an organic chemist know Parafilm since periods of study and am surprised anew again and again, as well closes this film and how extensible it is. Meanwhile I use parafilm to seal the (with more than 20 years of content blessed) bottles of whiskey in my collection. This works perfectly and ensures massively increased service life, since the usual whiskey closures are inadequately sealed, also because the cork does not just sit in whiskey as a wine bottle very tight, but should be removable by hand. The shipper had apparently made by me actually narrow version ordered not there and sent me unceremoniously and without surcharge the broad issue. Super, which was then much more film for the money!