Profile: Harman Corporation supplies dip molded flexible vinyl products. Our product line includes plastic caps, grips and plugs; high temperature paint masks, custom dip molding and injection molding. We offer custom dip molded parts in a variety of colors and textures. Our cone plugs is ideal for masking off holes or studs and surrounding surface for grounding. Our silicone tubing is used for masking off irregular geometries, long protrusions or as a substitute for short runs.