The L3 adhesive platform is a proprietary specialty acrylic adhesive designed to withstand temperatures up to 275°F (135°C) and has a good adhesion to elastomeric substrates. It bonds well to Santoprene, Neoprene Rubber, Butyl Rubber, and many versions of EPDM Rubber. All L3 constructions feature an 83# kraft colored unprinted polycoated kraft (PCK) liner for superior processing