An economical, pressure sensitive, moisture resistant flatback tape designed to offer a positive, attractive seal and excellent adhesion to minimize carton sealing failures and prevent pilferage. Aggressive blend natural / synthetic rubber adhesive performs well under a wide range of temperature and humidity conditions. #530 is designed for use in applications where reduced weight can provide packaging material savings. Complies with Postal Regulation for Uninsured Packages. Product is not repulpable. Sold by the case.