I think everyone here is getting a bit too cautious.
Firstly, yes the oil goes from the pickup right into the filter.
Secondly, the oil pan gasket is above the pool of oil in the pan. Frankly, youo could run an engine with th epickup tube dipped into a bedpan full of oil, annd as long as the top of the pool remained above the pickup screen, as long as the pickup screen remained immersed, the engine would maintain oil pressure, maintain proper lubrication, and run normally. A leak in the oiloan gasket will not and cannot cause low pressure as long as the oil level is maintained per the dipstick.
As to the pump drawing in air bubbles, the crankcase is pressureized by blowby. And volume removed from the crankcase by the oil pump is replaced 1:1 by the oil running back into the crankcase via the return channels. The oil pump will not create a vacuum, will not draw in air bubbles. Especially considering that the leak would be above the oil pool and the pickup screen below.
In short, while the material you used may make the oilpan harder to remove in future, I can’t see where it would cause a problem as long as the pickup was properly reinstalled with clearance between the pan bottom and the screem. It sounds like it was, bacause if it were not you’d have low oil pressure.
I think you’re fine.