No special wrappings used on jars or bottles.
I live aboard and sail about 3500 miles a year going up and down the East coast. I've never had a glass jar fail, even when we've pounded for days through some pretty heavy seas. We load up a deep locker with cans and jars. Wine bottles are laid down in the bilge. Packing them tightly together so they don't shift seems to do the trick.
The only failure we've had is thin plastic water bottles. We stowed several 1 gallon jugs for extra drinking water. All of them chafed through and leaked their contents into the bilge.
Hope this helps,