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SAE Straight Tread O-Ring (O-ring Boss) SAE J1926-1
SAE Straight Thread O-ring, also known as O-Ring Boss (ORB). the straight threads with an O-ring for sealing. They offer several advantages over traditional tapered thread making them popular in various industrial applications.
Key Features:
- Straight threads:Unlike tapered threads (e.g., NPT), ORB fittings use straight threads, simplifying assembly and eliminating the need for thread sealant in most cases.
- O-ring seal:A specially designed O-ring housed within the fitting creates a reliable leak-proof seal against the male connector’s flat surface.
- High-pressure capability:ORB fittings can handle high pressures due to the combination of the O-ring seal and the strong thread engagement.
- Reusable: The O-ring can be replaced as needed, allowing for multiple reuses of the Quick Couplings.
Advantages:
- Leak-proof seal:The O-ring provides a superior seal compared to traditional tapered threads, reducing leakage risks and minimizing maintenance needs.
- Reduced assembly time:Straight threads simplify installation and eliminate the need for precise thread engagement, saving time and labor.
- Vibration resistance:The O-ring helps absorb vibration, ensuring a secure connection even under harsh operating conditions.
- Reusable:Replacing the O-ring allows for extended fitting life and cost savings.
Disadvantages:
- Higher initial cost:Compared to standard tapered thread fittings, ORB fittings might have a slightly higher initial cost due to the O-ring and specialized design.
- Specific tools:Installing and removing ORB fittings require dedicated tools like ORB wrenches, adding to the initial investment.
- Temperature limitations:O-ring materials have specific temperature limitations, so selecting the right material is crucial for your application’s operating temperature range.
Overall, SAE Straight Thread O-ring(ORB) offers a reliable and efficient solution for various hydraulic applications, especially where leak-proof connections, ease of assembly, and reusability are crucial. However, considering the initial cost, specific tools, and temperature limitations is essential when choosing ORB fittings for your specific needs.
The female port of the O-Ring Boss has a sealing face, chamfer, and a straight thread. The male connector has an O-ring and a straight thread. The seal is made when the O-ring is squeezed into the chamfer. The male and female threads bind together to make a mechanically strong connection. This connection is common in high pressure hydraulic systems.
| Inch size | Dash size | Thread Size | Male Thread O.D. (in) | Female thread O.D (in) | ||
|---|---|---|---|---|---|---|
| 1⁄8 | -2 | 5⁄16– 24 | 5⁄16 | 0.31 | 9⁄32 | 0.27 |
| 3⁄16 | -3 | 3⁄8– 24 | 3⁄8 | 0.38 | 11⁄32 | 0.34 |
| 1⁄4 | -4 | 7⁄16– 20 | 7⁄16 | 0.44 | 13⁄32 | 0.39 |
| 5⁄16 | -5 | 1⁄2– 20 | 1⁄2 | 0.50 | 15⁄32 | 0.45 |
| 3⁄8 | -6 | 9⁄16– 18 | 9⁄16 | 0.56 | 17⁄32 | 0.51 |
| 1⁄2 | -8 | 3⁄4– 16 | 3⁄4 | 0.75 | 11⁄16 | 0.69 |
| 5⁄8 | -10 | 7⁄8– 14 | 7⁄8 | 0.88 | 13⁄16 | 0.81 |
| 3⁄4 | -12 | 11⁄16– 12 | 11⁄16 | 1.06 | 1 | 0.98 |
| 7⁄8 | -14 | 13⁄16– 12 | 13⁄16 | 1.19 | 11⁄8 | 1.10 |
| 1 | -16 | 15⁄16– 12 | 15⁄16 | 1.31 | 11⁄4 | 1.23 |
| 11⁄4 | -20 | 15⁄8– 12 | 15⁄8 | 1.63 | 19⁄16 | 1.54 |
| 11⁄2 | -24 | 17⁄8– 12 | 17⁄8 | 1.88 | 113⁄16 | 1.79 |
| 2 | -32 | 21⁄2– 12 | 21⁄2 | 2.50 | 27⁄16 | 2.42 |
