Product Overview
ORFS Hydraulic Fitting Adapter is an interface fitting used to connect hydraulic components while converting connection formats within systems that require flat-face O-ring sealing for leak-controlled fluid transfer.
ORFS Sealing Advantages
Reduced Leakage Under Pressure Pulsation
The flat-face O-ring sealing design forms the seal at the interface rather than on the threads, helping maintain sealing performance under vibration and repeated pressure fluctuations.
High Pressure Compatibility
Suitable for hydraulic systems operating up to 420 bar (6,000 PSI) depending on size and adapter configuration.
Stable Reassembly Performance
The sealing function is created by controlled O-ring compression, reducing sealing variation during repeated maintenance and reconnection compared with thread-dependent sealing methods.
Standardized Interface Dimensions
Manufactured according to SAE J1453 dimensional requirements to support compatibility with matching ORFS hydraulic components.
Sealing Interface Control
Controlled Sealing Surface
Flat sealing faces are CNC machined to Ra ≤ 3.2 μm to support stable O-ring compression during assembly.
O-Ring Groove Accuracy
O-ring grooves are machined according to SAE J1453 dimensions, with groove width controlled within ±0.3 mm for consistent seal positioning.
Thread-to-Face Alignment
Threads and sealing faces are machined in one setup process to reduce alignment deviation during installation.
Corrosion Protection Verification
Zinc-nickel plated versions are verified to achieve 720+ hours neutral salt spray resistance (ASTM B117).
Production Traceability
Each batch is linked to material records and inspection reports for shipment verification.
Available Configurations
| Item | Available Options |
| Adapter Type | Straight, Elbow, Tee, Reducer |
| Connection Combination | ORFS × ORFS, ORFS × JIC, ORFS × BSP, ORFS × NPT, ORFS × Metric |
| Material | Carbon Steel, Stainless Steel 304, Stainless Steel 316 |
| Surface Finish | Zinc Plated, Zinc-Nickel Plated |
| O-Ring Material | NBR, FKM |
| Size Range | 1/4"–2" |
| Marking | Part Number, Batch Code, Customer Logo |
| Packaging | Bulk Packaging, Individual Bag Packaging |
FAQ
Q: Why use ORFS instead of tapered threads?
A: ORFS seals through O-ring compression at the face rather than thread interference, reducing dependency on thread sealing.
Q: What standard defines ORFS fittings?
A: ORFS dimensions are commonly manufactured according to SAE J1453.
Q: Can ORFS adapters be reused?
A: If threads and sealing surfaces remain undamaged and the O-ring is replaced when required, reuse is generally possible.
Q: Does tightening torque affect sealing?
A: Yes. Excessive or insufficient torque can affect O-ring compression and sealing performance.
Q: What information is needed for selection?
A: Connection types on both ends, pressure requirements, material preference, operating environment, and installation constraints should be confirmed before ordering.
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