The 3M Barrier Plastic Device ULTRA PPD3 is a game changer for industrial and scientific applications. Its strong sealing capabilities make it perfect for use in harsh environments and the plastic material is highly versatile, allowing it to accommodate a range of uses. The one downside is that it can be a bit difficult to remove once in place, but this just speaks to its long-lasting durability. Overall, this is a highly recommended and effective caulking solution for any industrial or scientific setting.