O-rings used on chlorine equipment should be made out of what material?

O-rings used on chlorine equipment should be made out of Viton because this material is specifically designed to resist degradation caused by chemicals, including chlorine. Viton, which is a type of fluoroelastomer, offers excellent resistance to a wide range of aggressive chemicals, including acidic and basic substances, making it an ideal choice for handling chlorine gas and solutions. This resistance prevents the O-rings from breaking down or losing their sealing properties, ensuring safety and efficiency in water distribution systems where chlorine is used for disinfection.

In contrast, rubber, silicone, and plastic materials may not provide the same level of resistance to chlorine exposure. Rubber O-rings can deteriorate and lose flexibility when in contact with chlorine, potentially leading to leaks. Silicone may not withstand high concentrations of chlorine and can also degrade over time. Plastic materials typically lack the necessary flexibility and sealing properties required for high-pressure applications, further making them unsuitable for chlorine equipment. Thus, Viton's unique properties make it the preferred choice for O-rings in chlorine applications.