Static Seals for Hydraulic and Pneumatic Applications
Static seals are used to prevent leakage between two stationary components in hydraulic and pneumatic systems. Unlike dynamic seals, which are designed for moving parts, static seals create a seal between surfaces that have no relative motion. They are crucial for maintaining pressure, preventing contamination, and ensuring the efficient operation of various equipment.
O-Rings
The most common type, offering a simple and effective sealing solution.
Gaskets
Flat seals used between two surfaces.
Bonded Seals
Combine a metal washer with an elastomeric sealing element.
Static Face Seals
Used where sealing is required perpendicular to the mating surfaces.
Materials
Nitrile Rubber (NBR)
Good resistance to oils and fuels, cost-effective.
Viton (FKM)
High-temperature resistance and excellent chemical compatibility.
Silicone
Good temperature resistance and flexibility.
EPDM
Excellent for water and weather resistance.
Applications
Hydraulic and Pneumatic Cylinders
Sealing between the cylinder head and body, or between ports and the cylinder.
Valves
Sealing between valve body components.
Pumps
Sealing between pump housing and stationary parts.
Key Features and Benefits
Leakage Prevention
Effectively prevent fluid or gas leakage between stationary parts.
Pressure Maintenance
Help maintain system pressure by preventing loss of hydraulic fluid or pneumatic air.
Contamination Control
Prevent external contaminants from entering the system.
Simplified Design
Often simpler in design compared to dynamic seals.
Selecting the Right Seal
Operating Pressure
The maximum pressure the seal needs to withstand.
Fluid Compatibility
The type of fluid or gas the seal will be in contact with.
Temperature Range
The range of temperatures the seal will be exposed to.