August Race GRP Sealer UV is a semi-permanent cross linking polymer coating formulated to help prevent water spotting on boats while also helping reduce UV damage. GRP Sealer UV is a mixture of 2 polymers that crosslink together to provide a glossy, durable surface coating with a high degree of water repellency which actively sheets water away. GRP Sealer UV also contains a high quality UV absorber to help reduce UV damage to gel coat.