ORFS Fittings
O-Ring Face Seal (ORFS) tube fittings and adapters per SAE J1453 / ISO 8434-3. The elastomeric O-ring on the machined flat face delivers zero external leakage, making ORFS the preferred standard for modern high-pressure hydraulic systems.
Standard: SAE J1453 / ISO 8434-3 · 10 product series
ORFS Union Tube Fitting
MaterialCarbon Steel / SS316L
ORFS to SAE ORB Fitting
MaterialCarbon Steel / SS316L
ORFS 90° Flare Coupling
MaterialCarbon Steel / SS316L
Bulkhead ORFS Union Tube Fitting
MaterialCarbon Steel / SS316L
ORFS to BSPP Thread Tube Fitting
MaterialCarbon Steel / SS316L
ORFS to Metric Thread Tube Fitting
MaterialCarbon Steel / SS316L
ORFS Female Swivel Tube Fitting
MaterialCarbon Steel / SS316L
ORFS Swivel Nut to Straight Thread Tube Fitting
MaterialCarbon Steel / SS316L
ORFS to NPT Thread Tube Fitting
MaterialCarbon Steel / SS316L
ORFS Conversion Tube Fitting
MaterialCarbon Steel / SS316L
Frequently asked questions
What is an ORFS fitting and why is it preferred over NPT or BSP?
ORFS (O-Ring Face Seal, SAE J1453 / ISO 8434-3) achieves zero external leakage because the seal is made by an elastomeric O-ring compressed between flat machined faces. NPT and BSPT seal via thread interference and degrade over time; ORFS seals remain intact through repeated assembly cycles, vibration, and pressure transients.
Can ORFS fittings be reused?
Yes. The O-ring should be inspected and replaced if compressed or damaged, but the metal bodies can be reused many times. We recommend replacing the O-ring when disassembling the joint for service.