[lendaddy]

We make a plunger here from screw machine stock. It's a 1/2" diameter spring loaded pin that you can pull back on and retract it into a "body". I hope that makes sense, think of it as a piston that travels inside a jug, but can actually protrude 1/2" outside the jug when released (or pulled back, aginst spring tension, inside the jug).

Anyway we weld these little suckers to a tubular assembly and have the whole business e-coated. Ecoating is a dip coating process. The parts are polarized as is the paint in the dip(opposite polarity). This causes the adhesion. Anyway we would LOVE to find some coating(or any other idea) that when applied to the pin would prevent it from being coated. They are currently Zinc coated which helps a tiny bit, but still allows enough paint to adhere to cause stiction in the "jug" which we have to work out before packing. Silicone is OUT! They would kill me if they got their system contaminated with it.

I was wondering about telflon or ceramic, but am not sure. If anyone has any ideas or experience in e-coating you would be my hero.

We spend hours and hours each week just freeing these up.

I figured what the heck, people in here know all kinds of weird stuff. Thanks again.