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V981 is a 1/32" thick, closed cell Polyvinyl Chloride with acrylic on both sides. It is excellent for glazing of joints with high movement such as marine glass. V981 is a good choice to seal out water, dust and light, even in joints with a high degree of movement. Due to its excellent resistance to weathering, oxidation and ultraviolet exposure, it produces a long-life seal. Norseal® V980 series.