3M Membrane Switch Spacer Double Linered 9045MP features 3M High Performance Acrylic Adhesive 200MP, formulated for excellent shear strength, on a 1 mil PET film carrier. Adhesive withstands repeated switch actuation and forms clean edges for precise slitting and die-cutting. Heavy 94# PCK paper liners resist humidity, curling, tunneling and buckling and add stability for improved processing.