?????3m540是一款密封胶水，潮湿条件下快速固化，能密封或粘接多种塑料，金属，木材和其它材料。有弹性，能适应不同膨胀系数的材料之间造成的扭曲。拉伸强度250psi.固体含量90%，分为黑色和灰色两种颜色，固化时间24小时，胶水呈膏状。工作温度范围-40度-90度。?Description3M Scotch-Seal Polyurethane Sealants are one component, moisture curing products which form permanently elastic bonds.Bonds to a wide variety of materials including plastics, FRP, SMC, aluminum, steel, coated metal, and wood.SizeNet 10.5 Fl. Oz. Cartridge? (310ML/Cartridge)Package Size12 per caseColorGray?