I am using the Seeed water pressure sensor (SKU 114991178) in an espresso machine to measure water pressure. Unfortunately, the sensor is leaking! I connected the sensor’s G1/4 male connection (same as BSPP 1/4") to a BSPP 1/4" female with teflon tape on the threads and it leaked. I added more teflon tape and it still leaked.
Attempt #2: adding an o-ring to the sensor. This also leaked. I think the sensor should have a gland or receiving surface for the o-ring, but it does not.
Seeed engineers – how do you get a good seal with this sensor?