Tridon Thermostat TT8700-180P Ultra-Select either paper or rubber 'O'

either paper or rubber 'O' rings (sealing rings)

They are electronic devices used to indicate how much material is left before disc pad replacement is required

Flange Dia: 38mm

The unique vane designs including pillar

Tridon Thermostat TT8700-180P Ultra-Select either paper or rubber 'O'The thermostat is a temperature control valve assembly used in the vehicle cooling system. Located in a housing usually at the front of the vehicle engine, the thermostat allows circulation of coolant through the radiator once the predetermined engine temperature is achieved. There are various styles of thermostats available including conventional, by pass, thermostat housing assemblies, high flow and inserts used in conjunction with original housing.