Can ABS withstand being submerged underwater 24/7?

[Ama-fessional Molder]

It's certainly true. There is special waste handling requirements when dealing with coolants/cutting oils from shops that machine brass.

I doubt it would be significant from a 3d printer nozzle.

[NaotoSakaue]

I hesitate to write about this. I do not intend to blow my own trumpet.
As someone wrote previously, PP is the best material for your purpose. But PP filament has the issue, big CTE. We, NANODAX , has announced glass wool filled PP filament which is really usable.

• Surface is very smooth.
• Easy to cut, shave the model.
• Has flexibility and strength.
• Water tight wall.
• Light.
• No odor during process.
• Endure 120-130 degree.
• Chemical resistance
• Parameter tolerance is large

This link to Z-temp forum is good to understand how it behave.
The filament is going to be put into market end of SEP if everything goes well.