Sealing rings are precision-engineered components that prevent fluid leakage and maintain pressure integrity in piston and diaphragm assemblies.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Clearance Gap | 0.05-0.15 mm depending on pressure | |
| Cross Section | 1.5mm to 6mm | |
| Diameter Range | 5mm to 500mm | |
| Surface Finish | Ra 0.2-0.8 μm on mating surfaces | |
| Pressure Rating | Up to 40 MPa (static), 25 MPa (dynamic) | |
| Temperature Range | -40°C to +200°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A precision component in pharmaceutical-grade sterile diaphragm valve actuators, combining a piston and a flexible diaphragm to create a sealed, sterile actuation mechanism.
A critical assembly combining impeller and piston functions for fluid pressurization in high-pressure pumps
A critical assembly within hydraulic or electromechanical actuators that converts fluid pressure or electrical energy into linear mechanical motion.
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Static seals are used between non-moving surfaces and rely primarily on compression. Dynamic seals accommodate relative motion (reciprocating, rotating, or oscillating) and require special design considerations for friction, wear, and lubrication.
Material selection depends on fluid compatibility, temperature range, pressure, motion type, and environmental conditions. NBR is standard for petroleum-based fluids, FKM for high temperatures and chemicals, and PTFE for extreme chemical resistance.
Common causes include improper installation (twisting or cutting), excessive clearance gaps, incompatible fluids, temperature extremes beyond material limits, surface imperfections on mating components, and inadequate lubrication in dynamic applications.
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