Stainless Steel ORFS Adapters
Leak-Free O-Ring Face Seal Hydraulic Fittings
What Are Stainless Steel ORFS Adapters?
Stainless steel ORFS (O-Ring Face Seal) adapters are high-performance hydraulic connectors designed for zero-leak performance in high-pressure fluid systems.
Unlike tapered thread connections, ORFS fittings utilize straight threads combined with an elastomeric O-ring positioned in the face of the fitting. When tightened, the O-ring is compressed against a flat mating surface, creating a highly reliable, vibration-resistant seal.
Manufactured from corrosion-resistant 304 and 316 stainless steel, ORFS hydraulic adapters are widely used in heavy equipment, fluid power systems, mobile hydraulics, and industrial machinery where leak prevention is critical.
Typical Technical Characteristics
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Thread Type: UNF straight thread
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Sealing Method: O-Ring Face Seal (O-ring compression)
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Standard: SAE J1453 / ISO 8434-3
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Material: SS 304 / SS 316 / SS 316L
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Pressure Rating: Up to 6000 PSI (depending on size)
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Size Range: 1/4" - 2"
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Reusability: Designed for repeat assembly
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Application: High-pressure, vibration-intensive systems
Types of Stainless Steel ORFS Adapters
Comprehensive range of stainless steel O-Ring Face Seal adapters for professional hydraulic applications
ORFS Male Union Adapter
- • Material: SS 304, SS 316L
- • Size: 1/4" - 2"
- • Thread: ORFS Male x 2
- • Type: Straight Union
ORFS Male Braze Adapter
- • Material: SS 304, SS 316L
- • Size: 1/4" - 2"
- • Thread: ORFS Male x Braze
- • Pressure: Up to 6000 PSI
ORB Male to ORFS Male Adapter
- • Material: SS 304, SS 316L
- • Size: 1/4" - 2"
- • Thread: ORFS Male x ORB Male
- • Type: Straight Adapter
ORFS Male Swivel Nut Adapter
- • Material: SS 304, SS 316L
- • Size: 1/4" - 2"
- • Thread: ORFS Male x Female
- • Type: Swivel Nut
ORFS Female Swivel Adapter
- • Material: SS 304, SS 316L
- • Size Range: 1/4" to 2"
- • Type: ORFS Female x NPT Male
- • Standard: SAE J453
ORB Male to ORFS Male 90° Elbow
- • Material: SS 304, SS 316L
- • Size: 1/4" - 2"
- • Thread: ORFS Female x Male
- • Shape: 90° Elbow
Male NPT to ORFS Male Adapter
- • Material: SS 316L, SS 304
- • Size: 1/4" - 2"
- • Thread: ORFS Male x NPT Male
- • Shape:90° Elbow
ORFS Male Tee Adapter
- • Material: SS 304, SS 316L
- • Size: 1/4" - 2"
- • Type: 3-Way Tee
- • Ports: Equal ORFS Connections
Technical Specifications of Stainless Steel ORFS Adapters
Precision-engineered ORFS adapters designed for leak-free performance in demanding hydraulic applications
Typical Technical Specifications
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Thread Type: UNF Straight Thread (ORFS)
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Sealing Method: O-Ring Face Seal Compression
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Standard: SAE J1453 / ISO 8434-3
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Material Options: SS 304 / SS 316 / SS 316L
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O-Ring Material: NBR (Standard) / FKM (Viton Optional)
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Pressure Rating: Up to 6,000 PSI (Depending on Size)
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Size Range: 1/4" - 2"
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Temperature Range: -40°C to 200°C (Depending on O-ring Material)
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Surface Finish: Precision CNC Machined
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Corrosion Resistance: Suitable for Marine & Harsh Industrial Environments
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Reusability: Designed for Multiple Assemblies
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Installation: No Thread Sealant Required
Applications of Stainless Steel ORFS Adapters
High-Performance Sealing
Stainless steel ORFS (O-Ring Face Seal) adapters are widely used in high-pressure hydraulic systems where zero-leak performance and vibration resistance are critical. The flat face sealing design with an elastomeric O-ring ensures reliable sealing under demanding operating conditions.
Typical Applications
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Hydraulic Power Units (HPU) - High-pressure fluid transmission systems
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Construction & Heavy Equipment - Excavators, loaders, drilling machinery
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Oil & Gas Systems - Offshore platforms and process piping
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Industrial Automation - Precision hydraulic control circuits
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Mobile Hydraulics - Agricultural and mining equipment
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Marine Applications - Corrosion-resistant hydraulic assemblies
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Fluid Power Systems - Pumps, valves, manifolds, and cylinders
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OEM Hydraulic Equipment Manufacturing - Leak-free factory assemblies
Why Choose Our Stainless Steel ORFS Adapters
Our stainless steel ORFS adapters are engineered for demanding hydraulic systems where leak-free sealing, durability, and long-term reliability are essential. We focus on precision manufacturing and consistent quality to support OEMs, distributors, and industrial hydraulic applications worldwide.
Leak-Free O-Ring Face Seal Design
Precision-machined flat sealing surface ensures reliable, zero-leak performance under high pressure.
Premium 304 / 316 / 316L Stainless Steel
Excellent corrosion resistance for marine, chemical, and harsh industrial environments.
High Pressure Performance
Rated up to 6,000 PSI depending on size and configuration.
SAE J1453 Compliant Production
Manufactured in accordance with international ORFS standards.
Strict CNC Machining Tolerances
Accurate thread engagement and consistent O-ring compression.
OEM & Bulk Supply Capability
Stable production capacity for wholesalers and hydraulic distributors.
Custom Specifications Available
Special sizes, markings, and private labeling supported.
Global Export Experience
Reliable supply chain and responsive technical support.
Frequently Asked Questions
Expert answers about ORFS adapter technology and applications
What does ORFS stand for?
ORFS stands for O-Ring Face Seal. It is a hydraulic fitting design that uses a flat face with an elastomeric O-ring to create a leak-free seal in high-pressure hydraulic systems.
What standards do your ORFS adapters comply with?
Our stainless steel ORFS adapters are manufactured in accordance with SAE J1453 and ISO 8434-3 standards to ensure dimensional accuracy and sealing reliability.
What materials are available?
We supply ORFS adapters in SS 304, SS 316, and SS 316L stainless steel. 316/316L is recommended for marine, chemical, and corrosive environments.
What is the maximum working pressure?
Pressure ratings vary depending on size and configuration. Most stainless steel ORFS adapters are rated up to 6,000 PSI.
Do ORFS fittings require thread sealant?
No. ORFS adapters achieve sealing through the O-ring face compression, so thread sealant is not required.
What is the difference between ORFS and NPT fittings?
ORFS uses a flat face O-ring seal, providing superior leak prevention. NPT relies on tapered thread interference, which may require thread sealant and is more prone to leakage under vibration.
Are your ORFS adapters interchangeable with major brands?
Yes. Our ORFS adapters are designed to be dimensionally compatible with internationally recognized ORFS standards.
Do you support OEM and bulk orders?
Yes. We provide OEM production, bulk pricing, and private labeling for distributors and hydraulic equipment manufacturers worldwide.
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