New seal temperature sensor?

In the past I ordered a couple of temperature sensors like in the picture. I never got the sillicone seal marked with yellow in the picture. Is this new?

I have some troubles with leaking with these sensors. To make them waterproof I have to tighten the nut extremely tight. The sillicone seal would make it a lot easier.


I started including these around over 2 years ago. I’ll send you a few of them.

Thanks! :slight_smile: