Stainless Steel ORB Hydraulic Fittings & Adapters Manufacturer
Hydraxio manufactures precision stainless steel ORB (O-Ring Boss) hydraulic fittings and adapters engineered to SAE J1926 standards. Our products are fully compatible with major brands such as Parker, SSP, Brennan, and Aeroquip.
ORB fittings utilize an O-ring sealing mechanism to provide a leak-free, high-pressure connection. Unlike tapered threads, the O-ring design ensures consistent sealing performance and easy installation in hydraulic systems.
Manufactured from high-quality stainless steel, our ORB fittings deliver excellent corrosion resistance and long service life, making them ideal for demanding industrial, marine, and fluid power applications.
Features:
• Size: 1/8″ to 2″
• Thread: ORB/ORB, ORB/NPT, ORB/JIC, ORB/ORFS
• Material: AISI 304 / 316 / 316L / 316Ti
• O-Ring Material: NBR / FKM (Viton)
• Type: Straight, 45° & 90° Elbow, Tee, Cross, Reducer, Plug, Cap
• Compatible with Parker, SSP, Brennan, Aeroquip standards
• Precision CNC machining with tight tolerance control
• Excellent sealing performance with O-ring design
• High corrosion resistance for harsh environments
• OEM customization & technical support available
Types of Stainless Steel ORB Hydraulic Adapeters
Stainless steel ORB hydraulic adapters are designed for high-pressure hydraulic systems requiring leak-free sealing and reliable performance. Featuring an O-ring boss (ORB) sealing design, these adapters ensure consistent sealing and easy installation across ORB, JIC, and NPT connections.
JIC Male × ORB Male Adapter
(SS-6400 Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to connect JIC 37° flare systems to ORB ports with secure, leak-free sealing.
Long Hex JIC Male × ORB Male Adapter
(SS-6400-L Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed for extended installation reach, connecting JIC 37° flare systems to ORB ports with secure, leak-free sealing.
NPTF Female × ORB Male Adapter
(SS-6405 Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to connect NPTF threaded systems to ORB ports with reliable, leak-free sealing performance.
NPTF Male × ORB Female Port Adapter
(SS-6404 Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to connect ORB ports to NPTF threaded systems with secure sealing in high-pressure applications.
ORB Male Adjustable Adapter
(SS-6403-NWO Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed for adjustable positioning during installation while maintaining reliable O-ring sealing performance.
Female JIC Swivel × ORB Adapter
(SS-6402 Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to provide flexible connection between JIC systems and ORB ports with easy installation and secure sealing.
JIC Male × ORB Adjustable 90° Elbow
(SS-6801-NWO Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to change flow direction by 90° with adjustable alignment and leak-free O-ring sealing.
JIC Male × ORB Adjustable 45° Elbow
(SS-6802-NWO Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to redirect flow at 45° with flexible installation and reliable sealing performance.
ORB Male Hollow Plug
(SS-6408-HHP Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to seal ORB ports while allowing controlled flow or pressure relief in specific applications.
SAE ORB Male Plug
(SS-6408 Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to securely seal unused ORB ports and prevent leakage in hydraulic systems.
NPTF Male × ORB Adapter
(SS-6401 Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to connect NPTF threaded components to ORB ports with reliable, leak-free sealing.
JIC Male × ORB Adjustable Tee
(SS-6803-NWO Series)
Available in sizes 1/4″–2″.
Material: SS 304 / SS 316 / 316L
Designed to connect JIC 37° flare systems to ORB ports with adjustable alignment and reliable, leak-free O-ring sealing.
ORB Thread Size Chart & Dimensions (SAE J1926 Standard)
ORB (O-Ring Boss) thread size chart provides standard dimensions defined by SAE J1926 for accurate identification and proper installation of ORB hydraulic fittings. The table below shows thread sizes, dash numbers, and corresponding dimensions to ensure system compatibility and reliable sealing performance.
All our stainless steel ORB hydraulic fittings are manufactured in accordance with SAE J1926 standards
| Inch size | Dash size | Thread Size | Male Thread O.D. (in) | Female thread O.D (in) |
|---|---|---|---|---|
| 1/8 | -2 | 5/16 – 24 | 5/16 | 9/32 |
| 3/16 | -3 | 3/8 – 24 | 3/8 | 11/32 |
| 1/4 | -4 | 7/16 – 20 | 7/16 | 13/32 |
| 5/16 | -5 | 1/2 – 20 | 1/2 | 15/32 |
| 3/8 | -6 | 9/16 – 18 | 9/16 | 17/32 |
| 1/2 | -8 | 3/4 – 16 | 3/4 | 11/16 |
| 5/8 | -10 | 7/8 – 14 | 7/8 | 13/16 |
| 3/4 | -12 | 1 1/16 – 12 | 1 1/16 | 1 |
| 7/8 | -14 | 1 3/16 – 12 | 1 3/16 | 1 1/8 |
| 1 | -16 | 1 5/16 – 12 | 1 5/16 | 1 1/4 |
| 1 1/4 | -20 | 1 5/8 – 12 | 1 5/8 | 1 9/16 |
| 1 1/2 | -24 | 1 7/8 – 12 | 1 7/8 | 1 13/16 |
| 2 | -32 | 2 1/2 – 12 | 2 1/2 | 2 7/16 |
ORB Fittings Pressure Rating Chart & Specifications (SAE J1926)
ORB (O-Ring Boss) hydraulic fittings utilize a straight thread with an O-ring seal to achieve secure, leak-free connections in hydraulic systems. The pressure ratings shown below are based on SAE J1926 standards and represent the maximum recommended working pressure for ORB ports and adjustable stud fittings.
Understanding these pressure limits is essential for proper fitting selection, system safety, and reliable performance in high-pressure applications.
| SAE Dash Size | Inch Tube O.D | Thread Size | Working Pressure of ORB Port/Male(Mpa) | Working Pressure of Adjustable Studs(Mpa) |
|---|---|---|---|---|
| -2 | 1/8" | 5/16-24 UNF | 34.50 | 34.50 |
| -3 | 3/16" | 3/8-24 UNF | 34.50 | 34.50 |
| -4 | 1/4" | 7/16-20 UNF | 34.50 | 31.00 |
| -5 | 5/16 | 1/2-20 UNF | 34.50 | 27.50 |
| -6 | 3/8" | 9/16-18 UNF | 34.50 | 27.50 |
| -8 | 1/2" | 3/4-16 UNF | 31.00 | 27.50 |
| -10 | 5/8" | 7/8-14 UNF | 24.00 | 21.00 |
| -12 | 3/4" | 1 1/16-12 UN | 24.00 | 21.00 |
| -14 | 7/8" | 1 3/16-12 UN | 21.00 | 17.00 |
| -16 | 1" | 1 5/16-12 UN | 21.00 | 17.00 |
| -20 | 1 1/4" | 1 5/8-12 UN | 17.00 | 14.00 |
| -24 | 1 1/2" | 1 7/8-12 UN | 14.00 | 10.50 |
| -32 | 2" | 2 1/2-12 UN | 10.50 | 8.00 |
Note: Pressure ratings may vary depending on material, temperature, and installation conditions. Always refer to application requirements for final selection.
Stainless Steel ORB Adapter Cross Reference Chart – Parker, SSP, Brennan Equivalent
Cross reference chart for stainless steel ORB adapters, compatible with Parker, SSP, Brennan, TITAN, and other major brands, based on SAE J1926 standards.
| Hydraxio | SAE | Parker | SSP | TITAN/BI/Tompkins |
|---|---|---|---|---|
| SS-6400 Series | 070120 | F5OX-SS Series | J-GC Series | SS-6400 Series |
| SS-6400-L Series | 071720 | FF5OX-SS Series | J-LGC Series | SS-6400-L Series |
| SS-6405 Series | 090156 | F5OG-SS Series | GCF Series | SS-6405 Series |
| SS-6404 Series | FHG5-SS Series | SS-6404 Series | ||
| SS-6403-NWO Series | F5OHAO-SS Series | SS-6407/6403 Series | ||
| SS-6402 Series | F65OX-SS Series | JS-GC Series | SS-6402 Series | |
| SS-6801-NWO Series | 70220 | C5OX-SS Series | J-GE Series | SS-6801 Series |
| SS-6802-NWO Series | 70320 | V5OX--SS Series | J-GE-45 Series | SS-6802 Series |
| SS-6408-HHP Series | 090109B | HP5ON-SS Series | CGP Series | SS-6408-HH Series |
| SS-6408 Series | 090109A | P5ON-SS Series | GP Series | SS-6408 Series |
| SS-6401 Series | F5OF-SS Series | GCM Series | SS-6401 Series |
Note: Equivalent part numbers are provided for reference only. Please confirm specifications or contact our team for exact replacements.
Applications of Stainless Steel ORB Hydraulic Fittings
Stainless steel ORB (O-Ring Boss) hydraulic fittings are widely used in high-pressure systems where leak-free sealing, durability, and corrosion resistance are critical. The O-ring sealing design ensures reliable performance in demanding environments compared to traditional thread sealing methods.
Manufactured in accordance with SAE J1926 standards, ORB fittings provide consistent dimensions and secure connections across a wide range of hydraulic and industrial applications.
Construction and heavy-duty machinery
Vibration-resistant connections in mobile hydraulic systems.
Oil & gas and petrochemical equipment
High-pressure hydraulic lines exposed to aggressive environments.
Marine and offshore applications
Saltwater-resistant hydraulic systems requiring corrosion protection.
Agricultural and forestry machinery
Outdoor hydraulic applications exposed to moisture and environmental stress.
Industrial automation and manufacturing systems
Long-term durability in factory hydraulic operations.
Chemical Processing Industry
Stainless steel performance in corrosive fluid systems.
Frequently Asked Questions
ORB (O-Ring Boss) fittings use straight threads with an O-ring to create a leak-free seal. They are widely used in hydraulic systems where reliable sealing and easy installation are required.
ORB fittings use an O-ring for sealing, while NPT fittings rely on tapered threads. ORB provides more consistent and reusable sealing, whereas NPT depends on thread deformation and sealant.
Yes. Our stainless steel ORB fittings are manufactured to SAE J1926 standards and are fully interchangeable with major brands such as Parker, SSP, Brennan, TITAN, and Tompkins.
ORB fittings are commonly available in stainless steel 304, 316, and 316L. For sealing, O-rings are typically made of NBR or FKM (Viton) depending on application requirements.
Pressure ratings depend on size and design, but ORB fittings are suitable for high-pressure hydraulic systems. Always refer to the pressure rating chart and application requirements for proper selection.
Yes. ORB fittings can be reused as long as the O-ring is in good condition. Replacing the O-ring is recommended to ensure optimal sealing performance.
Why Partner with Hydraxio for Stainless Steel Hydraulic Fittings?
✔ 20+ Years Stainless Steel Specialization
✔ 50+ CNC Precision Machines
✔ ISO-Certified Production & Inspection
✔ Global Bulk Supply to 50+ Countries
✔ OEM & Brand-Compatible Solutions
