Monitor Well® plugs are designed to seal ground water monitor wells placed                                                                                   around  underground storage tanks, as well as around above ground tanks,                                                                                   landfills, and treatment plants.   Monitor Well Plugs meet all EPA require -                                                                                  ments for locking plugs used  to seal off ground water monitoring wells.                                                                                  Sized to seal Schedule 40 piping. The 2" and  4" also can seal schedule 5                                                                                  plastic  & stainless steel pipe.

                                                                                Made wiith chemical/petroleum resistant EstalocTM plastic top/bottom plates                                                                                 and Nitrile   sealing "O" ring.  Comes with stainless   steel carriage  bolt and                                                                                 yellow chromate coated locking latch.   Using the latch as you would a wing                                                                                 nut, the sealing "O" ring is easily expanded. Once tight in the welll the latch is                                                                                 lowered over the ribs of the top plate. The latch is designed to use Dolphin                                                                                 solid brass padlock or a No. 2 Master® Padlock.