Slurry Ring - Slurry Control - Slurry Collection Ring - Seal Included - 2"-4" SizesSlurry Rings Slurry Control Core Drilling Accessories Upgrade your slurry control game with GDP Slurry Rings. These clear plastic rings are incredibly strong and come with a replaceable seal to ensure long lasting use. The double ring seals provide strong suction on concrete, masonry, and brick walls, and if installed properly, you can even drill on the ceiling without making a mess. Plus, the replaceable seal is easy to replace with pins and double