FS0318-04 SAE O-Ring Face Seal ORFS Nut

FS0318-04 ORFS Nut | Steel O-Ring Face Seal Hydraulic Nut

The FS0318-04 SAE O-Ring Face Seal (ORFS) Nut is a precision-engineered hydraulic fitting component designed for secure sealing in ORFS connection systems. Manufactured from high-strength carbon steel and finished with trivalent zinc plating, this nut offers excellent corrosion resistance and long service life in demanding hydraulic environments.

Built in accordance with SAE J5143 standards, the ORFS system uses straight threads combined with an elastomer O-ring to create a highly reliable, leak-resistant seal between male and female hydraulic components. This design ensures consistent performance even under high pressure, vibration, and harsh operating conditions.

This ORFS nut is commonly used as part of ORFS swivel and adapter assemblies, and it can also interface with multiple thread systems including JIC, NPT, and NPSM, making it a versatile component in hydraulic system design and repair.

Specifications

• Part Number: FS0318-04
• Material: Carbon Steel
• Plating: Trivalent Zinc
• Shape: Nut
• Thread Type: Female ORFS (O-Ring Face Seal)
• Standard: SAE J5143