larsen-tools wrote:

I read somewhere that it's not a good idea to uses Teflon tape on threaded
joints in a hydraulic system.
Is that correct and if so, why?

Is it because tape can break off & clog the orifices, or, is it because
hydraulic fluid dissolves Teflon? (it seems to) ...... or are there other
reasons?
Pipe threading compound contains Teflon.
I'm wondering if I should take all those fittings apart and replace the
tape.
TIA

Teflon is bad in light airplane fuel systems--(gravity feed, no fuel pump)
because a little sliver can stop up the main jet or needle valve----if you
tape too close to the end of the male fitting, it can sometimes squeeze ahead
& cut itself loose to wander
around

I wouldn't worry about a hydraulic system, they usually have filters & a few
passes thru the pump will chop it down fine.---unless you have some pilot
operated
flow control valves with leetle bitty oryfices...The thread joint compounds
with
Teflon usualy have the TFE ground up very fine to obviate such circumstances.