Instant PowerFlex GEL is great for on-the-go shoe repair and other items that require the bond to be flexible & impact resistant. Infused with rubber particles. BONDS: Ceramics, leather, metals, plastic, rubber, wood, etc.* * Not suitable for polystyrene foam, foam rubber, polyethylene and polypropylene. Do not use to attach or to reattach rearview mirror. Bonded items should not be heated in an oven, microwave or dishwasher. Do not use to repair bike tire.