Easily apply outdoor-durable Quik-Align® labels to identify sites, chemical containers or other points of emphasis where unusual reactivity with water could occur. Card-mounted polyester film characters feature pressure-sensitive adhesive. Flexible material conforms to most surfaces and holds up to harsh environments, abrasion, and repeated spills and cleanings. Weathers up to 8 years outdoors, even longer indoors, and withstands wide temperature variations (-40°F to 230°F).