Submergible, submersible thermostats for integration. Hermetic bimetal thermostats for harsh environments. 01 ABOUT THE PRODUCT The right packaging for your application Bimetal thermostats, or thermistors, from Airpax/Sensata in enclosures for the checking the temperature of liquids. Choose the right technology Hermetically sealed in stainless steel or brass. Bimetal for galvanically separated switching or thermistor for electronic control. Choose the one that suits your particular application.