Thermocouple connectors

I have been trying to figure out a good way to integrate per cylinder thermocouple wiring into my main wiring harness for a while. I dont want to just run the thermocouples into the main harness because that would mean if a thermocouple died I would need to remove the whole thing in order to extract and replace it but I also dont really like the idea of spending $15-20USD per pin on chromel/alumel DTM pins. Has anyone come up with a nice solution that doesn't involve a DTM connector pair becoming the single most expensive connector in the whole loom

https://www.milspecwiring.com/ALUMEL-PIN-SIZE-20-DTMMILSPEC_p_850.html

Any reason you don't want to use the standard thermocouple female connector?

https://au.rs-online.com/web/p/sensor-accessories/4559758

Mainly just a matter of it not being a watertight connector, maybe a bit of glue lined heatshrink on the back of the connector would be the solution there.