The new Black Witch "toluene free formula" is suitable for quick, (up to one hour) repairs, of Neoprene rips and tears and especially suitable for Neoprene butt end jointing of seams or edges, where rubber is directly bounded together. Black Witch is also suitable for use on latex wrist and neck seals etc. Note: When quick repairs are not required, or to re-coat high wear abrasion areas such as knee or elbow sections etc, use McNett Aquasure high strength, permanent adhesive.