A natural color Kraft paper tape with aggressive natural rubber adhesive system. Excellent tear and moisture resistance. Approved for packaging by U. S. Parcel/Postal Service and UPS. A great overall performer, 539 is a low curl, highly conformable flatback designed for Carton Sealing, Packaging, Silk Screening, Picture Framing, Beaming/Leasing, Splicing, and Tabbing. Usable in automatic tape heads.