FS0318 SAE O-Ring Face Seal (ORFS) Nut | Hydraulic Fitting Component
Description
The FS0318 SAE O-Ring Face Seal (ORFS) Nut is a precision hydraulic fitting component designed to secure tubing within ORFS (O-Ring Face Seal) connections in high-pressure fluid systems. ORFS nuts clamp tubing to sleeves and bodies to form a reliable, leak-resistant seal that performs consistently under pressure and shock.
ORFS Fitting System Overview
ORFS fittings use a flat sealing face with an elastomeric O-ring to achieve a leak-free metal-to-metal seat. The ORFS nut:
- Holds the tubing against the ORFS body
- Compresses the O-ring for sealing
- Works with ORFS sleeves and bodies to complete the joint
This design excels in high-pressure hydraulic systems where traditional flare or compression fittings may not provide adequate vibration resistance.
Applications
FS0318 ORFS nuts are suitable for:
- High-pressure hydraulic circuits
- Systems subject to continuous mechanical shock
- Industrial fluid power applications
- Mobile and construction hydraulics
- Automation and machinery systems
Pressure Ratings
- Working pressure: Up to 6,000 PSI
- Actual pressure capability varies depending on:
- Tube size
- Fitting size
- Overall assembly conditions
Ideal for extreme-pressure systems operating at or above 5,000 PSI
Key Features & Benefits
- Designed specifically for SAE ORFS (O-Ring Face Seal) systems
- Creates a reliable, high-pressure seal with O-ring contact
- Suitable for shock-intensive hydraulic environments
- Easy installation with standard tools
- Compatible with standard ORFS sleeves and bodies
- Provides long-lasting performance under vibration and dynamic loads
Typical Use Cases
- Hydraulic tube and hose assemblies
- Manifold port connections
- High-pressure fluid handling systems
- Mobile equipment hydraulics
- Industrial machinery requiring leak-resistant connections
Installation Notes
- Slide nut onto tube before ORFS sleeve and body
- Ensure O-ring is seated properly in body sealing face
- Hand-tighten then torque with wrench as needed for secure seal
These nuts are engineered for severe service environments, including applications with continuous mechanical shock, vibration, and high operating pressures.