Expansion-contraction joint filler for myriad industrial and commercial applications. Made of specially selected granulated cork securely bonded with insoluble resin. Natural cork is the superior choice for wear-resistance under continuous strain, particularly where sealed joints are required such as at water treatment plants, spillways, and bridges. For best results, refer to structure or plan’s detail drawing for installation. Typically, the sponge rubber is placed at interrupting objects, against the forms, or adjacent abutting structures before concrete installation. Shop cork board in more sizes and thicknesses at 95TSS.