Specially formulated for joining the seams of vinyl shower pan liners, the Weld-On 660 PVC Shower Pan Liner Solvent Cement produces long-lasting, water-resistant bonds. This fast-drying solvent cement provides instant strength, which increases as the solvent dissipates. To use, simply apply the clear PVC solvent cement to the desired shower pan liner seams, press them together, and hold for a few seconds until you feel the "grab" begin. The bond strength will be good within a few minutes and excellent within 24- hours to 48-hours, continuing to strengthen for weeks. This solvent cement has a working time of 2-minutes to 20-minutes and can be used on both wet and dry surfaces.