The SEM 40477 Heavy Bodied White Seam Sealer is a high-quality automotive product designed to seal seams, joints, and voids on steel and aluminum surfaces. With a volume of 7 oz., this seam sealer is OEM-approved and meets California Prop 65 warning requirements for cancer and reproductive harm. The brand SEM is known for producing reliable automotive tools and supplies, making this product a trustworthy choice for maintaining and repairing vehicles.