Pneumatic Seals – O-Rings for Pneumatics and Their Applications
Pneumatic seals are precision-engineered components made from high-performance materials, essential for maintaining optimal pressure in cylinders and valves by preventing air or gas leakage. They are used in high-speed machinery with low working pressures and handle both rotary and reciprocating motion. Seals can function unidirectionally (axial only) or bidirectionally (both directions in reciprocating systems).
Features and Benefits of Pneumatic Seals
Our industrial-grade pneumatic seals, including cylinder and valve applications, utilise elastomers selected for exceptional wear resistance, flexibility, and compression performance. These dynamic sealing elements offer high durability, low friction, and excellent temperature tolerance. Designed for low-pressure systems, they efficiently maintain pressure, requiring minimal lubrication for airtight performance.
Types of Pneumatic Seal Rings
Piston Seals – High-quality radial seals (commonly known as piston rings) fit in the piston head and prevent air loss either single- or double-acting.
Rod Seals – Installed between the rod and gland, these typically unidirectional seals feature sealing lips and dust wipers to ensure smooth, clean movement.
Wiper Seals – Also referred to as scraper seals, they prevent the ingress of contaminants like dust or mud into pneumatic cylinders.
Static Seals – These maintain tight seals between stationary components and include standard O-rings and X-rings.
Guide Rings – Designed to reduce wear between sliding surfaces, these low-friction rings support smooth piston motion.
If you're unsure which seal type suits your pneumatic application, our team can help you choose the right solution—get in touch.
Applications of Pneumatic Sealing Rings
Pneumatic seals are commonly used in:
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Construction machinery
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Hydraulic and piston pumps
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Vacuum and compressed-air equipment
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Drilling machinery
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Valves and pumps in chemical processing
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Cryogenic fluid control
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Aerospace and space research
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Oil, gas, and petrochemical industries
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Paper production (e.g., suction rollers, doctor blades)
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Marine, agricultural, and domestic appliance systems
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Automotive and food-industry production lines
Pneumatic Seals Available at Power Rubber
At Power Rubber, we supply a wide range of pneumatic seals tailored for industrial applications involving rotary and reciprocating motion. Our product range includes PTFE, NBR, EPDM, FKM (Viton®), silicone, and more. With advanced manufacturing methods, we can offer bespoke sealing solutions to meet specific client needs.
Our pneumatic seals are engineered to prevent gas leakage between rods or pistons and cylinders, with high durability across all our radial, static, wiper, guide, and piston seals.
If you’re unsure about the best seal for your application, contact us at +44 22 292 4024 or +44 50 516 0303, email Power@PowerRubber.com, or use our contact form.
