24291-RW 90 Degree ORFS Female O-Ring Seal Fitting

Our 90 degree ORFS female O-ring seal fitting, series 24291-RW, is a one-piece crimp-on elbow that connects braided hydraulic hose to ORFS female ports at a right angle, with a flat face seat and a UNF female thread. It is built to the American ORFS (O-Ring Face Seal) system, where the compressed O-ring carries the seal. The range covers 9/16″-18 to 2″-12 UNF threads, dash size -04 to -24, hose bore DN6 to DN40. Every elbow is formed in one piece, without welding, and 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)

Why buyers choose this elbow:

• One-piece 90 degree elbow. Formed from a single forging or cold-headed blank. No weld at the bend, no weak point under impulse pressure.
• The standard right-angle connection. Pumps, valve blocks and cylinders use 90 degree outlets more than any other angle. This elbow covers them with one part.
• ORFS flat face seat. The flat seat receives the O-ring tip of the mating ORFS male connector, creating a zero-leak face seal without metal-to-metal fit-up.
• Full UNF thread range. 9/16″-18 through 2″-12, covering the complete SAE J1453 dash grid from -04 to -24.

90 Degree ORFS Female O-Ring Seal Fitting Technical Specifications

The table below lists all 24 sizes of the 24291-RW 90 degree 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. Dim. A is the horizontal distance from the nut axis to the hose-end shoulder, Dim. H is the height from the nut face to the hose axis, Dim. C is the cone zone length, and S2 is the wrench size across flats.

Notes: The -RW suffix denotes the braided-hose version; for spiral-wound hose, use series 24292-XX-XXRW. The 24291 series is the 90 degree elbow counterpart of the 24241 45 degree elbow, the 24211 straight ORFS female fitting and the 14211 ORFS male fitting.

Why a One-Piece 90 Degree Elbow

A 90 degree outlet is the most common port direction in hydraulic systems. Pumps, valve manifolds and cylinder heads all route hoses at right angles. This 90 degree ORFS female O-ring seal fitting replaces a straight fitting plus a separate 90 degree adapter, removing two potential leak points and extra length.

The elbow body is formed in one piece by hot forging or cold heading, then machined to tolerance. There is no welded seam at the bend. Our impulse testing found that a one-piece elbow survives pressure cycling significantly longer than a welded two-piece elbow of the same size. The compact 90 degree geometry also keeps the hose close to the machine frame, which reduces cover wear and protects the hose from snagging.

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.

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 90 Degree ORFS Female O-Ring Seal Fitting

Selection is a four-step process. First, confirm the port needs a right angle. Second, match the hose bore to the dash size. Third, match the UNF thread to your port. Fourth, confirm the hose construction version (-RW for braided, 24292 series for spiral).

Structure des références

Lisez toute référence HENGHUA en trois segments. Exemple : 24291-08-08RW.

Sélectionner par série de tuyaux

The 24291-RW elbow 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)

The nut rotates freely before tightening, which lets you align the 90 degree outlet in any direction around the port axis.

90 Degree vs 45 Degree vs Straight – Which One Do You Need

Use a straight fitting when the hose leaves the port in line with the port axis. Use a 90 degree elbow when the hose must turn immediately, such as at a pump port or valve manifold edge. Use a 45 degree elbow when the hose needs a shallow angle change. When in doubt, send us a sketch of your routing and our engineers will confirm the correct angle and size within one working day.

Références croisées

This series replaces equivalent SAE J1453 ORFS 90 degree 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 90 degree 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. Select the correct die set for your hose and fitting size. Crimp in one continuous stroke. After crimping, measure the crimp O.D. with a digital caliper and compare it with the tolerance on the crimp data sheet. Record the value on your quality log. Then align the nut and tighten it to the torque value on the data sheet.

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.
• Align the nut before final tightening. Rotate the 90 degree outlet to its final direction, then tighten. Do not use the hose to twist the nut into position after tightening.
• 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 90 degree ORFS female O-ring seal fitting solutions for OEM programs.

Customization Services

• Angle and thread customization. Special bend angles, non-standard thread lengths, 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.

Frequently Asked Questions

What is a 90 degree ORFS female O-ring seal fitting?

It is a one-piece elbow 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 90 degree outlet redirects the hose at a right angle to the port axis.

Why choose a 90 degree elbow instead of a straight fitting?

A 90 degree elbow turns the hose immediately at the port, which is the standard routing at pumps, valve manifolds and cylinder heads. It removes the need for a separate adapter and keeps the hose close to the machine frame.

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 24291-RW fitting?

The 24291-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 24292 series.

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 90 Degree ORFS Female O-Ring Seal Fitting

Tell us your hose model, thread size, bend angle 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 and routing verification.