Sealing Elements and Separators

Festo Sealing Elements and Separators

Festo’s sealing elements and separators are critical components used to maintain airtight integrity and controlled media separation within pneumatic valves and valve assemblies. Built with high-quality elastomers and engineered for long-term durability, these components help ensure optimal system performance, prevent unwanted leakage, and maintain stable actuation characteristics across varying pressure and temperature conditions.

Designed to interface seamlessly with Festo valve bodies, sub-bases, manifolds, and terminal systems, these sealing elements are available in various sizes, materials, and configurations to match specific valve families and application requirements.

⭐ Important: High-quality seals and separators prevent internal leakage, maintain consistent switching performance, and significantly extend the service life of pneumatic valves.

Design & Functionality

Sealing elements and separators provide isolation between ports, chambers, and internal valve pathways to ensure precise directional airflow. They are engineered to withstand repeated cycling, pressure fluctuations, and environmental exposure.

Festo offers a broad range of sealing solutions, including:
• O-rings for valve interfaces
• Port seals for manifold systems
• Flat seals and gasket seals
• Separator plates for multi-station valves
• Special sealing materials for harsh environments

These components are designed to ensure low friction, stable seating force, and resilient sealing behavior, supporting smooth valve switching and prolonging maintenance intervals.

⭐ Important: Material and geometry are optimized for repeatable sealing, even under high cycling rates in automated machinery.

Total Crossed Beams

(Applied to the coverage of sealing and separator types)

Comprehensive sealing coverage tailored for various valve families, ensuring precise airflow routing and protection against cross-port leakage.

Guarantees operational stability across the full valve stroke, switching cycle, or manifold arrangement.

Designed to retain sealing integrity regardless of mounting orientation, pressure changes, or actuator load.

Beam Pitch Options

(Translated as: sealing sizes, material choices, variant options)

Sealing elements and separators are available in multiple geometries, materials, and dimensional standards.

Available options include:
• NBR, EPDM, FKM/FPM and other elastomers
• Round, flat, and molded sealing variants
• Separators for isolating flow channels in manifold systems
• High-temperature, chemical-resistant, or food-grade materials
• Sizes and thicknesses matched to specific Festo valve series

This enables customization based on application needs—such as high-pressure resistance, rapid cycling durability, chemical exposure, or media separation.

⭐ Important: Wide sealing material selection allows optimal performance in temperature-critical, chemically demanding, or high-cycle industrial environments.

Intrinsic Synchronism

Precisely manufactured sealing profiles ensure uniform compression and consistent seating force across the entire surface.

This promotes synchronized valve operation, reducing internal leakage and enhancing control accuracy.

Optional separator plates assist in maintaining isolated internal pathways for valves installed on manifolds or terminal systems.

Operational Advantages

• Reliable sealing for long-term leak-free operation
• Enhanced valve switching performance due to stable sealing characteristics
• Reduced maintenance thanks to high-durability elastomers and construction
• Compatibility with Festo ISO valves, solenoid valves, pilot valves, and manifold systems
• Improved system efficiency by minimizing air loss and energy consumption

Applications: Valve terminals, manifold systems, directional control valves, process automation, handling technology, pneumatic assemblies.