Valve seals are key components in valve and fluid technology. They ensure a leak-free seal and the safe control of fluid flow in valves. Their main function is to either allow the controlled flow of liquids or gases or to completely prevent it by creating a tight seal between the valve body and moving components (e.g., valve cone, disc, or ball).

They are found in virtually all industrial sectors – from hydraulic and pneumatic systems to process and chemical engineering, and on to the food and energy industries.

PTFE valve seals – FiKumer^®-F

• Properties: virtually universal chemical resistance, very low coefficient of friction, wide operating temperature range (−200 °C to +260 °C)
• Advantages: ideal for aggressive media, high temperatures, low friction
• Disadvantages: no elasticity – often used as a seat ring or in combination with elastomer support elements
• Applications: Chemical and process engineering, food industry, ball and globe valves

Elastomer valve seals – FiLomer^®

• Properties: high elasticity, good resilience, resistance dependent on the medium
• Advantages: good sealing performance even at low contact pressures, versatile application
• Disadvantages: limited temperature and pressure resistance, dependent on the medium
• Applications: Pneumatic valves, water and gas systems, sanitary engineering

Polyurethane valve seals – FiPur^®

• Properties: High abrasion and extrusion resistance, good elasticity
• Advantages: Robust, durable, resistant to mechanical stress
• Disadvantages: Limited chemical resistance to hot water and acids
• Applications: Hydraulic valves, high-pressure systems, mobile machinery

Valve seals made of high-performance materialsn – FiMasol^®, e.g., PEEK, PPS

• Properties: High mechanical strength, dimensional stability, and thermal resistance
• Advantages: Suitable for extreme operating conditions, long service life
• Applications: High-pressure, high-temperature, and offshore valves, chemical plants