Hydraulic and Pneumatic Seals

Piston Seals

• Related terms: hydraulic piston seals, pneumatic piston seals, cylinder piston seals, double-acting piston seals
• Seals fitted to the piston of a hydraulic or pneumatic cylinder to prevent fluid passing from one side of the piston to the other. By maintaining pressure across the piston, they ensure efficient, controlled movement in single and double-acting cylinders across industrial, mobile and agricultural equipment.

Rod Seals

• Related terms: hydraulic rod seals, piston rod seals, cylinder rod seals, U-cup rod seals
• Seals fitted in the cylinder gland to seal around the moving piston rod, keeping pressurised fluid inside the cylinder. They play a key role in preventing leakage and maintaining system efficiency in hydraulic and pneumatic cylinders, presses and actuators.

Symmetrical Seals

• Related terms: symmetrical U-seals, U-ring seals, dual-purpose hydraulic seals, symmetrical lip seals
• Seals with an identical lip profile on the inner and outer diameters, allowing them to be used as either a piston seal or a rod seal. Their versatility simplifies stocking and maintenance, making them a practical choice for general-purpose hydraulic and pneumatic cylinders.

Wiper Seals

• Related terms: hydraulic wipers, scraper rings, rod wipers, dust seals
• Seals installed at the outer end of the cylinder gland to clear dirt, dust, moisture and debris from the piston rod on its return stroke. Keeping contaminants out protects the rod seal and other internal components, helping to reduce wear and extend cylinder service life.