I have a toe-tap drain in a kids tub. The mechanism pops up and down properly when the top is not screwed on. If I screw the top part with the rubber gasket on completely, I can not push the top part down far enough to engage in the lower (closed) position. I can only get it to lock in the lower (closed) position if I unscrew the top a bit. When I unscrew the top, the gasket does not form a seal, hence water leaks out of the tub. I do not know what brand this is. Is there an internal height adjustment?

The toe tap threads onto a brass rod, if you unscrew the tap all of the way you will see the rod. You can back the rod out of the housing a bit but I do not think it will help much.I think you can just try to find middle ground, screw it to the point where it does seal and then stop.

The toe tap threads onto a brass rod, if you unscrew the tap all of the way you will see the rod. You can back the rod out of the housing a bit but I do not think it will help much.I think you can just try to find middle ground, screw it to the point where it does seal and then stop.

Thanks for answer. I replaced the cone-shaped gasket and that did the trick. Works fine. The gasket needs to sit on top of the pop-up mechanism, whereas the worn gasket was attached to the screw-off top.