Polyurethane Sealant

3M Polyurethane Sealant is a one-component, moisture-curing seam sealer designed for bodywork repairs. It cures to a hard yet permanently flexible seal within 24 hours (curing speed varies with application thickness and conditions). Temperature resistant from −40 °C to +90 °C (temporary up to 120 °C). Ideal for sealing medium to wide joints, welds and penetration welds. Suitable for bare steel, wood and plastic. For penetration welds apply while sealant is still wet (within 35 minutes). Allow at least 45 minutes cure before applying water-based primers.