24211-RW ORFS Female O-Ring Seal Fitting

Our ORFS female O-ring seal fitting, series 24211-RW, is a crimp-on hydraulic hose fitting built to the American ORFS (O-Ring Face Seal) system, with a UNF female thread and a flat face seat. It connects braided hydraulic hose to ORFS female ports on pumps, valves and cylinders made to SAE J1453. The flat seat receives the O-ring tip of the mating ORFS male connector, creating a zero-leak face seal. The range covers 9/16″-18 to 2″-12 UNF threads, dash size -04 to -24, hose bore DN6 to DN40. Every fitting is 100% dimensionally inspected before shipment.

Conformité et normes :

• SAE J1453 (O-ring face seal / ORFS system)
• ISO 8434-3 (O-ring face seal connectors)
• UNF threads (Unified National Fine, inch based)
• SAE J516 (norme de référence générale relative à la conception des raccords pour flexibles hydrauliques)

Pourquoi les acheteurs choisissent ce modèle :

• Flat face seat for the ORFS O-ring. The flat seat mates against the O-ring tip of the male ORFS connector. The compressed O-ring carries the seal, with no metal-to-metal fit-up required.
• Zero-leak face seal. ORFS is the preferred connection for high pressure, high impulse and mobile hydraulic applications where cone-type connections weep.
• Pairs with our ORFS male fittings. The matching male side is our 14211 series ORFS male O-ring seal fitting, completing the ORFS connection in one order.
• Full UNF thread range. 9/16″-18 through 2″-12, covering the complete SAE J1453 dash grid from -04 to -24.

ORFS Female O-Ring Seal Fitting Technical Specifications

The table below lists all 27 sizes of the 24211-RW ORFS female O-ring seal fitting. Dimensions are in millimeters. All threads are UNF (Unified National Fine) with a flat face seat per SAE J1453.

Notes: Dim. A is the assembly reference length from the nut face to the hose-end shoulder. Dim. C is the cone zone length. Hex S2 is the wrench size across flats. The -RW suffix denotes the braided-hose version; for spiral-wound hose, use series 24212-XX-XXRW.

How the ORFS Flat Seat Works

The ORFS female fitting carries a flat face seat inside the threaded end. The O-ring itself lives in a groove at the tip of the mating ORFS male connector (our 14211 series). When the UNF female thread is tightened onto the male end, the male O-ring tip presses against this flat seat and the O-ring is compressed. The O-ring, not metal, carries the seal.

This is why ORFS is called the face seal system: the seal happens on the flat face, perpendicular to the thread axis, rather than on a cone. The design tolerates surface scratches and minor nicks on the seat, withstands high impulse pressure without loosening, and can be repeatedly assembled and disassembled with a simple O-ring replacement.

ORFS vs JIC – Which One Do You Need

JIC (37 degree flare) is the classic American connection, economical and widely available. ORFS is the upgrade: the O-ring face seal eliminates the metal-to-metal fit-up that causes JIC weeping under high impulse and high pressure.

Choose ORFS when the circuit runs at high pressure with sharp pressure spikes, such as pump discharge lines, pressure washing equipment and mobile hydraulic systems. Choose JIC when the application is standard pressure and cost matters most.

Profondeur d'insertion et diamètre extérieur du sertissage : les deux chiffres demandés par les ingénieurs

La profondeur d'insertion correspond à la longueur de la partie cannelée qui pénètre dans l'alésage du tuyau. Le diamètre extérieur après sertissage correspond au diamètre extérieur de la virole après sertissage. Ces deux paramètres déterminent ensemble si l'ensemble résiste à la pression ou présente des fuites au niveau de la zone de sertissage.

HENGHUA publie les valeurs correspondantes de profondeur d’insertion et de diamètre extérieur de sertissage pour chaque type de flexible que nous fournissons, y compris les modèles SAE 100 R1AT, R2AT et EN 853 1SN / 2SN. Ces valeurs sont spécifiques à chaque flexible, car l’épaisseur du renfort influe sur l’épaisseur totale. Demandez notre fiche technique de sertissage en indiquant le modèle de votre flexible et nous vous communiquerons le diamètre extérieur exact du sertissage ainsi que le choix de la matrice dans un délai d’un jour ouvré.

Nos essais de production ont montré qu’un diamètre extérieur de sertissage vérifié et compris dans la tolérance publiée (généralement ± 0,2 mm) offre une marge de sécurité contre l’éclatement de 4:1 ou plus sur l’ensemble complet. Effectuez une mesure à l’aide d’un pied à coulisse numérique après chaque sertissage.

Matériaux et traitements thermiques

• Acier au carbone (standard) : high-strength cold-headed or hot-forged carbon steel (20# / 35# / 45# grades). The tail and flat seat are case-hardened with a carburizing and quenching process for fatigue resistance. Reference hardness range is HRC 20-28 on the core with a hardened case.
• Finition de surface : Zingage blanc ou de couleur (jaune) avec passivation. Des revêtements en zinc-nickel et Dacromet sont disponibles en option pour répondre à des exigences plus strictes en matière de test au brouillard salin.
• Acier inoxydable (en option) : 304, 316 or 316L stainless steel for corrosive media and washdown environments.

Valeurs nominales de pression et de température

The connection rating follows the SAE J1453 O-ring face seal reference table below. These are reference values (§) for the fitting connection itself. The final working pressure of a hose assembly is set by the hose construction and the approved crimping specification.

§Reference values per SAE J1453 O-ring face seal connection classes. Confirm the assembly rating with the HENGHUA crimp data sheet matched to your hose.

Plage de températures : -40°C to +100°C with the standard NBR O-ring on the mating male end. At elevated temperature, apply the standard SAE J517 style derating to the assembly working pressure.

Essais de pression : HENGHUA est en mesure de fournir des ensembles ayant subi des essais de résistance jusqu'à 100% de la pression de service nominale, avec des certificats d'essai sur demande.

How to Select the Right ORFS Female O-Ring Seal Fitting

Selection is a three-step process. First, match the hose bore to the dash size. Second, match the UNF thread to your port. Third, confirm the hose construction version (-RW for braided, 24212 series for spiral).

Structure des références

Lisez toute référence HENGHUA en trois segments. Exemple : 24211-08-08RW.

Sélectionner par série de tuyaux

The 24211-RW fitting is designed for braided hydraulic hose. Recommended matching constructions:

• SAE 100 R1AT (tresse à un brin) – pour les tailles de -04 à -24
• SAE 100 R2AT (tresse à deux fils) – pour les tailles allant de -04 à -24
• EN 853 1SN et 2SN (constructions européennes équivalentes)

Sélectionner par calibre de filetage

The flat seat receives the O-ring tip of the mating ORFS male connector. All threads are UNF (Unified National Fine):

• Petites tailles : 9/16″-18, 11/16″-16, 13/16″-16 (dash -04 to -08)
• Tailles moyennes : 1″-14, 1.3/16″-12 (dash -08 to -12)
• Grandes tailles : 1.7/16″-12, 1.11/16″-12, 2″-12 (dash -12 to -24)

Tightening is via the hex S2 with a standard wrench. The O-ring is carried by the mating male end, so assembly is a simple screw-on operation.

Références croisées

This series replaces equivalent SAE J1453 ORFS female fittings available in the market. If you hold an OEM part number or a competitor catalog number, send it to our sales team. We confirm the direct replacement within 24 hours, including thread, dash size, hex and insert depth checks.

Emballage et logistique

Guide de montage : quatre étapes pour un montage sûr du tuyau

Follow this process for every crimped assembly. It applies to every ORFS female O-ring seal fitting size from dash -04 to -24. Skipping one step is the most common cause of early fitting failure.

Étape 1 – Coupez le tuyau à angle droit. Utilisez un coupe-tuyau bien affûté. Une coupe à bords droits permet au raccord de s'emboîter uniformément dans le tuyau. Une coupe biseautée ou irrégulière laisse des espaces vides qui peuvent devenir des points de fuite.

Étape 2 – Marquez la profondeur d'insertion. Mesurez la profondeur d'insertion indiquée dans la fiche technique de sertissage HENGHUA. Tracez une ligne sur la gaine du tuyau à cette distance. Le repère doit rester visible après l'insertion.

Étape 3 – Lubrifiez et insérez. Appliquez une fine couche de lubrifiant de montage compatible à l'intérieur du tuyau et sur l'extrémité cannelée du raccord. Enfoncez le raccord en effectuant un mouvement de rotation jusqu'à ce que le repère de profondeur s'aligne avec l'extrémité du raccord. Arrêtez-vous au niveau du repère. Ne forcez pas au-delà.

Étape 4 – Sertir et vérifier. Choisissez le jeu de matrices adapté à la taille de votre flexible et de votre raccord. Effectuez le sertissage d’un seul mouvement continu. Une fois le sertissage terminé, mesurez le diamètre extérieur (DE) du sertissage à l’aide d’un pied à coulisse numérique et comparez-le à la tolérance indiquée sur la fiche technique du sertissage. Notez la valeur dans votre registre de qualité. Un diamètre extérieur de sertissage correct fait toute la différence entre un assemblage qui durera 10 ans et une défaillance sur le terrain.

Consignes de sécurité – À lire avant de procéder au sertissage

• Ne mélangez jamais les marques. Les flexibles et les raccords de différents fabricants peuvent présenter les mêmes dimensions, mais utiliser des paramètres de sertissage différents. Veillez à toujours utiliser un ensemble flexible, raccord et fiche technique de sertissage compatibles.
• Never seal the ORFS flat seat with tape. The O-ring on the mating male end carries the seal. Thread sealant tape or paste on the seat destroys the seal.
• Keep the flat seat clean and undamaged. A burr or deep scratch on the seat can cut the O-ring during assembly. Protect the seat during handling and storage.
• Do not confuse ORFS with JIC. ORFS seals on a flat face with an O-ring; JIC seals with a 37 degree flare cone. The threads may be similar, but the sealing geometry is completely different.
• Serrer conformément aux spécifications. Use the hex S2 and tighten to the torque value on the data sheet. Over-tightening distorts the seat. Under-tightening causes the O-ring to leak.
• Never reuse a crimped fitting. Once crimped, the ferrule zone is work-hardened. A re-crimp cannot restore the original grip.

OEM Customization and Quality Traceability

HENGHUA supplies not only standard sizes but also fully customized ORFS female O-ring seal fitting solutions for OEM programs.

Customization Services

• Thread customization. Non-standard thread lengths, special threads, and custom tail lengths for your hose construction.
• Surface treatment customization. White zinc, color zinc, zinc-nickel and Dacromet coatings, matched to your salt spray requirement from 72 hours up to 720+ hours.
• Laser marking. Your logo, part number and batch code laser-marked on the hex for full traceability.
• Packaging customization. Private-label boxes, barcode labels and mixed-size kits per your BOM.

Quality Traceability

Every HENGHUA batch carries a traceable batch number. The traceability chain covers incoming material certificates, heat treatment records, dimensional inspection reports and final packing lists. Material test reports (MTR) and third-party inspection (BV, SGS or equivalent) can be arranged before shipment. Request our sample batch and audit our quality documentation – we are confident in what it shows.

Foire aux questions

What is an ORFS female O-ring seal fitting?

It is a hydraulic fitting with a UNF female thread and a flat face seat. The seat receives the O-ring tip of the mating ORFS male connector, and the compressed O-ring carries the seal. The system follows SAE J1453 and ISO 8434-3.

Does the female fitting include the O-ring?

The O-ring lives in the groove at the tip of the mating ORFS male connector (our 14211 series). The female fitting provides the flat seat. Order the male and female ends together and the connection is complete.

Why does ORFS leak less than JIC?

ORFS seals with a compressed O-ring against a flat face, which tolerates scratches and surface imperfections. JIC seals with metal-to-metal 37 degree flare contact, which can weep under high impulse pressure.

Which hose works with the 24211-RW fitting?

The 24211-RW version is designed for braided hydraulic hose such as SAE 100 R1AT, R2AT and EN 853 1SN / 2SN. For spiral-wound hose, use the 24212 series.

Do you supply stainless steel versions?

Yes. 304, 316 and 316L stainless steel versions are available for the full size range, with the same dimensions and crimp behavior.

What is the minimum order quantity?

Stock sizes start from 100 pcs. Customized versions start from 500 pcs per size. OEM annual contracts can be discussed directly with our factory team.

Get a Quote for Your ORFS Female O-Ring Seal Fitting

Tell us your hose model, thread size and annual volume. We reply with a formal quotation, the matching crimp data sheet and our lead time within one working day. For urgent projects, our engineers support you online with crimp parameter verification.