The seal is one of the most important components of a sanitary butterfly valve. 

Its material directly affects sealing performance, durability, maintenance requirements, and overall valve service life.

Why Seal Material Matters

Sanitary butterfly valves often operate under demanding conditions, including high temperatures, frequent CIP cleaning, steam sterilization, and exposure to different process fluids. 

Choosing an unsuitable seal material can lead to premature wear, leakage, deformation, or reduced sealing performance.

EPDM is widely used in food, beverage, and dairy applications because of its good resistance to hot water, steam, and many cleaning solutions. It is a common choice for CIP and SIP systems.

FKM provides excellent resistance to oils, fuels, and many chemicals, making it suitable for applications where chemical resistance and temperature performance are important.

PTFE offers excellent chemical resistance, low friction, and a wide operating temperature range. It is often selected for demanding pharmaceutical, chemical, and aggressive-media applications.

How to Extend Sanitary Valve Service Life


Selecting the right seal requires consideration of the process medium, operating temperature, pressure, cleaning chemicals, and CIP/SIP conditions. 

Proper installation and regular inspection are also essential for maintaining reliable sealing performance.

The right seal material can reduce leakage, minimize maintenance, and extend the operating life of a sanitary tri clamp butterfly valve.

JIANEN provides stainless steel sanitary butterfly valves with different seal options for food, beverage, dairy, pharmaceutical, AI Data Liquid-Cooling and chemical processing applications.