3M™ Optically Clear Adhesive 821X is for use in general purpose applications including display touch applications where very high adhesion is critical.
3M™ Optically Clear Adhesives (OCA) are highly specialized optically clear free-film adhesives offering superior clarity and excellent adhesion to various types of transparent substrates. 3M OCAs are easy to convert and are contaminant-free, resulting in improved bubble resistance in lamination exposed to high temperature and high humidity. Common application example is display bonding. Available in the following product numbers: 8211, 8212, 8213, 8214 and 8215.