The primary goal is to ensure reliable sealing performance over extended periods while withstanding the specific environment of the application. Below are critical factors to evaluate:

• Different media (water, oils, chemicals, gases) interact differently with sealing materials
• Corrosion/chemical attack resistance is essential for aggressive substances
• Food/pharmaceutical applications require contamination-free, compatible materials

• Materials must maintain elasticity and integrity across system temperature ranges
• Risk of hardening/degradation at high temperatures or softening in cold conditions
• Temperature fluctuations can impact sealing consistency over time

• Material must withstand operating pressure without deformation or failure
• High tensile strength and compression resistance for higher-pressure applications
• Pressure surges should be accounted for in material selection

• Frequent operation requires materials with excellent wear resistance
• Minimize friction between seal and valve disc to reduce wear
• Durability is critical for maintaining long-term sealing efficiency

• Ensure no adverse reactions between seal and valve body/disc materials
• Chemical compatibility prevents degradation and efficiency loss
• Long-term material interaction must be evaluated for reliability

Careful consideration of these factors leads to reliable sealing solutions that withstand operational demands and environmental challenges.