CHT Sensor Dynon Thread Sealant

[sglynn]

Do you use thread sealant on the Dynon CHT Sensors?

[DaveWelch]

I'm not near my books. Does the Rotax Parts Manual specify a sealant there?

[cajunwings]

Never have used any sealant on CHT probes. Have not seen it called for in any Lycoming or Continental service or OH manual

Don Broussard A&P/ IA etc
RV9 Rebuild in Progress
57 Pacer

[snopercod]

You're not trying to seal the threads against pressure, so I would say "no". But you DO want to be able to remove the probe if and when it fails (one of mine just did after 170 hrs.). For that reason, I use nickel anti-seize on those threads. I removed my failed probe today and although tight, it came right out.