No reason for sealant on PP kitchen p-trap, right?

[Nikita]

I needed to reassemble a kitchen disposal and, when disassembled existing setup, noticed traces of some sort of sealant on p-trap threads (photo attached). Can't tell if putty or teflon tape?

Wasn't using either on PP useless - and maybe even counterproductive? ie when reassembling, should I just clean off existing gunk and assemble dry?

Thank you,

-nikita

 

[Terry]

I never put sealant on slip joint fittings. Some do, I don't.

 

[Sponsor]

 

[Nikita]

Thanks reassembled cleaned up without sealant - no issues so far after initial tests

I never put sealant on slip joint fittings. Some do, I don't.