4 Inch Well Seal with EarthStraw Gripper

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This 4" well cap consists of two round disks which sandwich a flexible rubber donut in between. The lower disk is threaded so that when the bolts on top are tightened, the disks come together and expand the rubber out against the inside walls of the casing. This sanitary well seal locks the seal like a plug inside any standard 4" ID well casing.

The EarthStraw locking sanitary well cap is made from structurally reinforced ABS and comes complete with the EarthStraw gripper in the center.