cut about 3 inches off the big end of dishwashing gloves ( avoiding the very end to where there maybe some fancy griping stuff) and fold the peice you just cut off in itself so its now half as wide and pull it over the opening of the jar and push the rest in the jar and enjoy. It works great for the price
ive done something similiar with different size jars but i used layers of latex gloves.it works long as you use lube and there are no holes.i do wish pumptoys would make seals for other size cylinders like 3 inch to 3.75.
