Stainless Steel SAE ORB Fittings Manufacturer–316Ti/316L/304 Hydraulic Adapters Supplier Since 1999
Discover our full line of stainless steel SAE O-Ring Boss (ORB) fittings, engineered for high-pressure hydraulic systems. Designed with precision for leak-proof sealing, our ORB adapters are widely used by OEMs, distributors, and industrial equipment manufacturers worldwide.
Explore Our Full Range of SAE ORB Fittings & Adapters
Stainless ORB Hydraulic Fittings is also known as O-ring BOSS Fittings that are defined by the SAE J1926 standard.
ORB fittings are similar to a JIC fittings without the 37 degree flare, but ORB Fittings need an o-ring for additional sealing. The O-ring allows for an extremely tight seal that can withstand high pressures, useful for hydraulic and other automotive applications.
QC Hydraulics is supplying stainless steel ORB adapters and SAE fittings for North American market. Most of our customers are wholesalers or distributors of hose and fittings.
✔ Rated up to 6,000 PSI
✔ Wide size range: 1/8″ to 2″
✔ Leak-free, vibration-resistant design
✔ Made of 316Ti / 316L / 304 stainless steel
✔ Precision-machined to SAE J1926/ISO 11926-3
✔ Thread types: JIC, NPT, ORB, ORFS, BSPP, metric
✔ Fitting types: straight, 45° & 90° elbows, tee, plug
Adjustable and ORB Fittings Thread Sizes & Pressure Rating
| Pressure Ratings for 37 Deg. Flared Tube Ends, 37 Deg. Female Swivels, O-Ring Port Plugs and Straight Thread Stud Ends (Inch) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nom SAE Dash Size | Nom Inch Tube O.D. | SAE J514 Flared Tube End and SAE J1926/3/ISO 11926-3 O-Ring Port Thread Size | 37 Deg. Flared Tube Ends, Unions and Bulkheads |
37 Deg. Female Swivels | SAE J514 Port Plugs & Stud Ends Per J1926/3 / ISO 11926-3 |
|||||
| MPa | psi | MPa | psi | MPa | psi | MPa | psi | |||
| -2 | 1/8 | 5/16-24 UNF | 34.5 | 5000 | 34.5 | 5000 | 34.5 | 5000 | 34.5 | 5000 |
| -3 | 3/16 | 3/8-24 UNF | 34.5 | 5000 | 34.5 | 5000 | 34.5 | 5000 | 34.5 | 5000 |
| -4 | 1/4 | 7/16-20 UNF | 34.5 | 5000 | 31 | 4500 | 34.5 | 5000 | 31.5 | 4500 |
| -5 | 5/16 | 1/2-20 UNF | 34.5 | 5000 | 27.5 | 4000 | 34.5 | 5000 | 27.5 | 4000 |
| -6 | 3/8 | 9/16-18 UNF | 34.5 | 5000 | 27.5 | 4000 | 34.5 | 5000 | 27.5 | 4000 |
| -8 | 1/2 | 3/4-16 UNF | 31 | 4500 | 27.5 | 4000 | 31 | 4500 | 27.5 | 4000 |
| -10 | 5/8 | 7/8-14 UNF | 24 | 3500 | 21 | 3000 | 24 | 3500 | 21 | 3000 |
| -12 | 3/4 | 1-1/16-12 UN | 24 | 3500 | 21 | 3000 | 24 | 3500 | 21 | 3000 |
| -14 | 7/8 | 1-3/16-12 UN | 21 | 3000 | 17 | 2500 | 21 | 3000 | 17 | 2500 |
| -16 | 1 | 1-5/16-12 UN | 21 | 3000 | 17 | 2500 | 21 | 3000 | 17 | 2500 |
| -20 | 1 1/4 | 1-5/8-12 UN | 17 | 2500 | 14 | 2000 | 17 | 2500 | 14 | 2000 |
| -24 | 1 1/2 | 1-7/8-12 UN | 14 | 2000 | 10.5 | 1500 | 14 | 2000 | 10.5 | 1500 |
| -32 | 2 | 2-1/2-12 UN | 10.5 | 1500 | 8 | 1125 | 10.5 | 1500 | 8 | 1125 |
Assembly Instructions For Adjustable Stud End and O-ring Port Fittings
1. To protect the sealing surfaces and prevent dirt and other contaminants from entering the system, do not remove the protective caps and/or plugs until it is time to assemble the components.
2. Prior to assembly, remove protective caps and/or plugs and inspect the connector and the port to ensure both mating parts are free of burrs, nicks, scratches or any foreign material.
3. If O-Ring is not present, install O-Ring on the port end of the connector using a proper O-Ring installation tool, taking care not to cut or nick the O-Ring.
4. Lubricate the O-Ring with a light coat of system fluid or compatible oil.
5. Position #1 – The O-Ring should be located in the groove adjacent to the face of the back-up washer. The washer and O-Ring should be positioned at the extreme top end of the groove as shown.
6. Position #2 – Position the locknut to just touch the back-up washer as shown. The locknut in this position will eliminate potential back-up washer damage during the next step.
7. Position #3 – Install the connector into the straight thread port until the metal back-up washer contacts the face of the port as shown.
Caution: Over tightening beyond contact can cause washer damage, if the washer is not supported by the locknut.
8. Position #4 – Adjust the connector to the proper position by turning out (counterclockwise) up to a maximum of one turn as shown to provide proper alignment with the mating connector, tube assembly or hose assembly.
9. Position #5 – Using two wrenches, use the backup wrench to hold the connector in the desired position and then use the torque wrench to tighten the locknut to the appropriate torque level shown in the following tables.
10. Visually inspect the joint, where possible, to ensure the O-Ring is not pinched or bulging out from under the washer and that the backup washer is properly seated flat against the face of the port.
| Assembly Torque, SAE J1926-3 Light Duty (L series) Stud Ends (Ref. SAE J514 Tube Fittings and Port Plugs) |
|||
|---|---|---|---|
| Tube Size | Thread Size | Ft. Lbs. | Nm. |
| -2 | 5/16-24 | 6-7 | 8-9 |
| -3 | 3/8-24 | 8-9 | 11-12 |
| -4 | 7/16-20 | 13-15 | 18-20 |
| -5 | 1/2-20 | 17-19 | 23-26 |
| -6 | 9/16-18 | 22-24 | 29-33 |
| -8 | 3/4-16 | 40-43 | 49-53 |
| -10 | 7/8-14 | 43-48 | 59-64 |
| -12 | 1-1/16-12 | 68-75 | 93-102 |
| -14 | 1-3/16-12 | 90-99 | 122-134 |
| -16 | 1-5/16-12 | 112-123 | 151-166 |
| -20 | 1-5/8-12 | 146-161 | 198-218 |
| -24 | 1-7/8-12 | 154-170 | 209-231 |
| -32 | 2-1/2-12 | 218-240 | 296-325 |
| Assembly Torque, SAE J1926-2 Heavy Duty (S series) Stud Ends (Ref. SAE J1453 ORFS Fittings) |
|||
|---|---|---|---|
| Tube Size | Thread Size | Ft. Lbs. | Nm. |
| -3 | 3/8-24 | 8-10 | 11-13 |
| -4 | 7/16-20 | 14-16 | 20-22 |
| -5 | 1/2-20 | 18-20 | 24-27 |
| -6 | 9/16-18 | 24-26 | 33-35 |
| -8 | 3/4-16 | 50-60 | 68-78 |
| -10 | 7/8-14 | 72-80 | 98-110 |
| -12 | 1-1/16-12 | 125-135 | 170-183 |
| -14 | 1-3/16-12 | 170-190 | 230-260 |
| -16 | 1-5/16-12 | 200-220 | 270-300 |
| -20 | 1-5/8-12 | 210-280 | 285-380 |
| -24 | 1-7/8-12 | 270-360 | 370-490 |
Stainless ORB Fittings Temperature Rating
When a seal material is used, its temperature rating may limit the overall temperature capability of the fitting. Please refer to the table below for specific temperature ratings.
| Seal Material | Temperature Range |
|---|---|
| NBR | -23°C to 120°C (Default Option) |
| Viton | -20°C to 180°C |
QC Hydraulics, Your Premier Stainless Steel Hydraulic Fittings And Adapters manufacturer
QC Hydraulics is a leading manufacturer of stainless steel hydraulic hose fittings, hydraulic adapters, tube fittings and PTFE hose assembly for over 20 years. Our outstanding team, state of the art technology, strict quality control, strong production capacity as well as professional service, enable us enjoying a great reputation in domestic and overseas.
Our products are widely recognized by those global hydraulic & industrial wholesalers/distributors and OEMs in the fields of hydraulic, pneumatic, oil & gas, chemical, marine and shipbuilding etc. Besides, we are also doing OEM service for several of worldwide big brand manufacturers of hydraulic fittings, which greatly reduce their production costs, and help them win more market share.
Now QC Hydraulics become more and more popular in high quality market overseas. We always meet even exceed customer’s expectations. QC Hydraulics is a reliable and trusted supplier of wholesalers, distributors and brand manufacturers of hose and fittings.
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