Our Durable White Film material is made out of Polypropylene with a top coat that allows it to be printed on and the adhesive is made out of acrylic. It is possible that the film and the top coat contain silicone since it is a common additive/filler in label materials, however the adhesive does not contain silicone.
Almost all label materials use a silicone coated backing sheet that allows the label to be easily removed from the liner. Although the silicone is fully cured, there is a possibility that small amounts of silicone will be transferred to the adhesive of the label, therefore Avery cannot guarantee that there is no silicone in it's Durable White Film Labels.
Here is a link for Durable White Film Labels: https://www.avery.com/blank/material/durable-white-film-labels