Hydraulic O-ring seals should be specified around the actual sealing conditions rather than size alone. Hongjie reviews hydraulic fluid, working pressure, temperature, static or reciprocating motion, groove dimensions, extrusion clearance and hardness requirements before confirming the compound and seal specification. Sizes are available from ID 0.60 × CS 0.20 mm to ID 1000 × CS 20 mm, with hardness options from 10–90 Shore A and ASTM D2000 compound support.
Hydraulic O-rings should be specified around the actual sealing conditions rather than size alone. Provide the working fluid, pressure, temperature, motion type, groove dimensions and extrusion clearance before the compound and hardness are finalized.
Specify the exact hydraulic oil, water-based fluid, synthetic fluid or other working medium.
Provide normal working pressure, peak pressure and pressure direction where known.
Provide the normal and maximum temperatures seen by the seal and surrounding hardware.
Confirm whether the seal is static or used on a reciprocating piston, rod or other moving interface.
Provide groove dimensions and mating clearances so squeeze and extrusion risk can be reviewed.
Hardness and backup-ring needs should be reviewed together with pressure, clearance, temperature and motion.
Available manufacturing specifications are combined with application inputs such as fluid, pressure, temperature, motion and gland geometry.
| Product Specifications | |
|---|---|
| Product Name | Hydraulic O-Ring Seals |
| Seal Type | Static or reciprocating, subject to application review |
| Compound Standard | ASTM D2000 support |
| Compound Options | NBR, HNBR, FKM, EPDM and application-specific compounds |
| Fluid Compatibility | Confirmed against the actual hydraulic medium and operating temperature |
| Hardness | 10–90 Shore A |
| Size Range | ID 0.60 × CS 0.20 mm to ID 1000.00 × CS 20.00 mm |
| Groove Input | Drawing or gland dimensions recommended for review |
| Inspection | 100% O-ring checking by Doss Machine |
| Backup Ring | Reviewed according to pressure, extrusion clearance and gland design |
| Surface Quality | Smooth molded surface with controlled parting line |
| Application Inputs | Fluid, pressure, temperature, motion, groove and extrusion clearance |
| Customization | Drawing, sample, dimensions, compound and hardness |
Static and moving seals place different demands on the O-ring and gland. Motion type should be confirmed before material, hardness and groove details are finalized.
Ports, plugs, manifolds and stationary interfaces
Pistons, rods and other moving sealing interfaces
O-rings can be specified for stationary and moving sealing positions throughout hydraulic and fluid-power equipment.
Used at piston, rod, end-cap and internal sealing positions where pressure, motion and gland geometry must be considered together.
Used in ports, plugs, cartridge interfaces and valve-block connections requiring compact static sealing.
Applied at internal and external sealing positions exposed to hydraulic fluid, pressure cycles and equipment vibration.
Used in threaded, flanged and port connections where groove geometry and compression must be controlled.
High-pressure performance depends on the complete gland design. Pressure, hardware clearance, hardness, surface condition and backup-ring requirements should be reviewed together.
Provide piston, rod, bore and groove dimensions so the maximum hardware clearance can be reviewed.
Hardness should be selected with pressure, clearance, temperature, installation and motion rather than as an isolated value.
A backup ring may be considered where pressure and clearance create an unacceptable extrusion risk.
Review surface finish, scratches, lead-in chamfers, sharp edges, lubrication and installation conditions that can damage the seal.
Seal damage often points back to the fluid, pressure, gland, motion or installation conditions. Use the failure pattern to guide the next engineering review.
Check pressure, extrusion clearance, hardness and backup-ring requirements.
Review motion, lubrication, surface condition, contamination and compound selection.
Recheck hydraulic-fluid compatibility and operating temperature.
Inspect groove fit, lubrication, sharp edges, ports, threads and installation method.
Complete operating information helps reduce uncertainty during compound, hardness and gland review.
O-ring size or drawing, groove dimensions and maximum mating clearance.
Hydraulic fluid name or grade plus normal and maximum operating temperature.
Normal and peak pressure, static or reciprocating service, and speed where applicable.
Required hardness, backup-ring arrangement, quantity, inspection needs and existing failure photos if available.
For broader material comparison, see O-Ring Seals. For non-standard dimensions, special grooves or drawing-based development, see Custom Rubber O-Rings.
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