Our D-Box seals are the only true watertight seals on the market today. Our 4''...

Our D-Box seals are the only true watertight seals on the market today. Our 4'' seal fits in both our 12'' and 20'' plastic D-Box. It accepts 2'', 3'', 4'' and corrugated pipe. Our 6'' seal works in our 20'' plastic D-Box. No other seals can do so much!

When a friction fit is important, you can count on the Polylok Grommet. Our...

When a friction fit is important, you can count on the Polylok Grommet. Our grommets are available in a variety of sizes and are used to ensure a watertight seal. Polylok Grommets instantly provide a water and vapor seal on either curved or flat surfaces!