The Lemco Seal should be mounted as close to the screen and pump as possible for maximum well production and corrosion resistance.

Install the seal with the nuts facing up.

To prevent electrolysis from eating a hole through the seal, use a nipple of dissimilar metal between the pump and seal. Wrapping the nipple with electrical tape may also help prevent electrolysis.

When using 1/4" tubing, remove the cover plate and reverse the rubber packer so the holes line up properly with the seal body and cover plate, then reassemble the seal.

Tighten the seal on the drop pipe, then insert the motor leads through the four smaller holes in the seal. If 1/4" tubing is used, insert it through the 1/4" hole in the seal and run it with the electrical wires.

Tighten the nuts to sufficiently hold the wires, tubing, and rubber packer firmly. It is important to form an airtight seal, but over-tightening may distort the rubber packer causing an airleak. Under tightening may also cause an airleak.

For 3-wire electrical motors, disassemble the seal and rotate the rubber so only three holes show through the seal.

Where venting is required or when it's undesirable to place a suction on the well, insert polyethylene tubing through the 1/4" hole in the seal and run it with the electrical wires to the top of the well. Keep the tubing open, but keep in mind, when trying to increase well production, this tubing must be sealed at the top of the well.

The 1/4" tubing can be used to chlorinate the well. Make sure the tubing is open at the top of the well and insert it into a jug of chlorine. When the pump runs, chlorine will siphon directly into the pump and screen area.

Wetting the inside of the casing can make it easier to push the seal down the well.

On installations where the casing is rough and air-leaks persist, it may be necessary to add water above the seal. This can also make it easier to push the seal down the well.