The material of the pressure valve uses a silicon rubber. Silicon rubber has the characteristic of being resistant to heat.
It has higher temperature durability of 100℃ and more than other synthetic rubbers such as NBR and EPDM which were conventionally used.
It also has high resistance to chemical substances and does not change for a long time even against chemicals such as LLC which exist in the radiator.
In addition, since we are all of the parts procurement and manufacturing processes in Japan, it is a high-quality products.
Currently, RADIATOR-CAP is produced overseas even genuine parts, there is almost no thing of made in Japan.
It is a commodity that is trusted by customers of Japanese-made safe and secure.