Illustration shows the rubber folding up all the way around as it enters the casing to form an airtight seal.
LEMCO WELD-ON SEALS
Available for 6" to 16" water wells in mild steel
Weld-on seals are generally field welded to the column pipe or to the tail pipe assembly of turbine pumps to increase well production in irrigation wells & municipal wells. They can also be slipped-on PVC drop pipe for use with submersible pumps. When used as a slip-on, we recommend installing these seals on a short piece of PVC and wedged top and bottom between two couplings.