FS0318-20 SAE O-Ring Face Seal ORFS Nut

FS0318-20 ORFS Nut | Steel O-Ring Face Seal Hydraulic Nut

The FS0318-20 SAE O-Ring Face Seal (ORFS) Nut is a heavy-duty hydraulic fitting component designed for secure, leak-resistant connections in ORFS systems. Manufactured from high-strength carbon steel and finished with trivalent zinc plating, it delivers excellent corrosion resistance and long-term durability in demanding hydraulic environments.

Built in compliance with SAE 520110 standards, this ORFS nut is engineered for high-pressure applications where sealing reliability, vibration resistance, and system integrity are essential. The ORFS design uses straight threads combined with an elastomer O-ring to create a highly effective seal that performs consistently under pressure fluctuations and harsh operating conditions.

Specifications

• Part Number: FS0318-20
• Material: Carbon Steel
• Plating: Trivalent Zinc
• Thread Type: Female ORFS (O-Ring Face Seal)
• Thread Size: 1 11/16-12 (-20)
• Standard: SAE 520110