Polylok, Incorporated

D-Boxes Seals


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!

  • Provides a watertight connection
  • No more different fittings to inventory
  • Easy to install
  • Easy tear outs to accommodate different size pipe

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