90 degree elbow metric male adapter 2E9 | ISO 6149 O-Ring Stud Ends, M12x1.25 to M52x2

Why This 90 degree elbow metric male adapter 2E9 Passes the Compliance Gate

Both ends of the 90 degree elbow metric male adapter 2E9 are metric male O-ring stud ends that seal with a captive O-ring on the flat face of an ISO 6149-1 port, from M12x1.25 to M52x2. The elbow turns a hose or tube line through a right angle with two identical stud ends, so one port preparation and one O-ring stock cover the whole connection. The fixed 90 degree body holds its shape under pressure and vibration, which a two-piece banjo or a stacked nipple-and-elbow cannot promise.

The 2E9 is bought by manifold builders, hydraulic power unit assemblers and maintenance engineers who must leave a machined block sideways. Because both ends are the same stud family, the elbow can be turned end for end and still mate with the same ports, which simplifies both the drawing and the spare parts shelf.

Core Advantages

1. Two matched ISO 6149-2 stud ends. Ports E and F share one thread size and one O-ring size in each row, so torque values and port preparation are identical at both ends.
2. Fixed 90 degree body. No swivel or banjo joint means no extra seal interface and no re-orientation under load.
3. Twelve tabulated sizes. M12x1.25 through M52x2, each row with its own A, B, S1 and S2 values.
4. Compact corner in a manifold stack. One elbow replaces a straight stud plus a separate corner fitting, removing a joint and a part number.
5. Documented, traceable supply. Batch traceability, dimensional records and material test reports support incoming inspection.
6. OEM marking. Laser marking of your part number, logo and batch code is available on the body or the hex.

Especificaciones técnicas

What Is a 90 degree elbow metric male adapter 2E9?

It is a one-piece 90 degree elbow in which both ports, E and F, are ISO 6149-2 metric male O-ring stud ends. Each port seals with an elastomeric O-ring compressed on a flat machined port face, as defined for that stud end family.

It is not a DIN 2353 / ISO 8434-1 24 degree cone elbow, and it is not a 74 degree cone elbow from the SAE J514 family, because those seal on a cone inside the port. It is also not the metric 74 degree cone series used on some European tube systems. Check the port standard first, then the thread.

Connection 1 – Metric male O-ring stud end (port E)

Connection 2 – Metric male O-ring stud end (port F)

Dimensional Data

Full Dimension Table (Part Number Matrix)

All dimensions are in millimetres and are transcribed row by row from the product data sheet. Thread codes are reproduced as printed, so M12X1.25 reads as M12x1.25 metric fine thread, and O-ring codes such as 16X2.4 read as 16 mm inside diameter by 2.4 mm cross-section. The largest row is printed as 2E9-51 with an M52x2 thread, so quote the part number as printed together with the thread callout.

Thread Size and Dash Chart

Material and Heat Treatment

The values above describe normal commercial practice for this family and are confirmed on the order drawing, not replaced by it.

Working Pressure and Operating Envelope

Because the data sheet for this series carries no pressure column, working pressure is governed by the port standard (ISO 6149-2 together with the ISO 6149-1 port) and by the hose, tube or fitting grade selected, and the finished assembly is only as strong as its weakest member. An elbow also redirects flow, so the line should be clamped either side and not used as a stress-bearing corner.

Ask for a rating table with your enquiry and we will state the figure and the test method for your thread size, material and downstream parts.

Rango de temperatura

The typical service window is -40 °C to +120 °C with a standard NBR O-ring, and the limit is set by the elastomer rather than by the steel body. FKM raises the upper limit for hot oil and some aggressive media, so confirm the elastomer for your fluid before ordering.

How to Read the Part Number Matrix

The order code carries two pieces of information: the elbow family prefix and the stud thread size, which applies to both ports.

1. Prefix – 2E9. The prefix states the ends: two metric male O-ring stud ends on a 90 degree body. Changing the prefix changes the end combination, not the elbow angle.
2. Size group – thread size. In 2E9-22 the group 22 identifies the metric stud thread, M22x1.5, on both ports.

Two examples make the pattern clear. 2E9-12 is the smallest row: M12x1.25 on both ports, 8×1.9 O-rings, A = 20.5 mm, hex 12 and 17. 2E9-42 is a large manifold size: M42x2 on both ports, 35×3.1 O-rings, A = 49.5 mm, hex 41 and 50.

If you need a different thread at each end, this equal elbow is the wrong part, because both ports always match. Send the two port callouts and we will identify the correct adapter instead.

Selection and Ordering

Cross Reference Service

Send an old part number, a photograph or a worn sample of the 90 degree elbow metric male adapter 2E9 and we will cross it to the closest row of this matrix. The answer states thread, O-ring and hex explicitly so you can verify it against your own measurement, the service is free, and we never re-label another maker’s part as our own.

Packaging and Logistics

Elbows ship in individual bags inside cartons, grouped by part number, with batch code and quantity on the outer label. Mixed cartons are routine for distributors and repair workshops. Material test reports travel with the goods when ordered, standard rows ship quickly from stock, and air freight covers urgent shutdown dates.

Installation and Fitment Guide

Step-by-Step Assembly

1. Verify the port threads and the port standard on both ports before starting work.
2. Check each port face for burrs, paint or old sealant, because an O-ring face seal needs a clean flat landing.
3. Fit new O-rings of the tabulated size to both stud ends, lightly lubricated with a compatible fluid.
4. Thread both stud ends in by hand and turn one port at a time until the elbow body points where the circuit needs it.
5. Tighten each stud end to the torque value for the thread size and material from the applicable standard data table.
6. Pressure test the finished assembly and record the result.

Torque and Sealing Notes

Tighten metric O-ring stud ends to the torque values for the thread size, material and coating from the applicable standard data table, and treat those figures as a starting point to be confirmed against your own test. An O-ring face seal does not need thread sealant, and tape or paste on the stud thread can force the O-ring out of its groove. Tighten the two ends alternately so the elbow is not twisted into a preload, and never use the body to lever the joint tighter. Over-tightening does not improve the seal and can stretch the thread or distort the port face.

Installation Warnings

• ✔ Confirm both ports are ISO 6149-1 flat-face O-ring type before fitting this elbow.
• ✔ Fit new O-rings of the tabulated size whenever a joint is broken.
• ✔ Use a spanner on the S1 or S2 hex and hold the body steady when breaking a joint.
• ✔ Clamp the line close to the elbow so the corner does not carry bending load.
• ❌ Never fit this elbow into 24 degree cone ports (DIN 2353 / ISO 8434-1), 60 degree cone ports, or 74 degree cone / SAE J514 style ports. The thread may start, but the seal geometry differs and the joint will not seal correctly.
• ❌ Never interchange this metric stud end with an inch O-ring stud end from the ISO 11926 family, even where thread diameters look close.
• ❌ Never use thread tape or sealant on the O-ring stud thread to stop a weep.
• ❌ Never mix a metric O-ring stud end with a metric 74 degree cone seat, which is a different sealing system used on some European tube assemblies.

Applications and Industries

The 90 degree elbow metric male adapter 2E9 appears wherever a line must leave a machined block at a right angle.

• Manifold and power unit assembly. Valve blocks, pump outlet ports and accumulator brackets turn the line sideways without a second fitting.
• Repair and replacement. A weeping or stripped corner port is repaired by replacing the elbow rather than the block, with the cross reference service identifying the row.
• Test rigs and benches. Gauge take-offs and return lines are routed around a frame with a fixed 90 degree body that will not drift.
• Industrial plant. Lubrication, cooling and clamp circuits use the elbow to keep lines parallel to machine guards.
• Mobile and construction machinery. Fixed elbows survive boom and attachment vibration better than a swivel corner, which is why they are specified near cylinders.

Tags: hydraulic adapter, metric O-ring elbow, ISO 6149 hydraulic fitting, 90 degree hydraulic adapter, metric male O-ring stud end, hydraulic manifold elbow, right angle hydraulic fitting, elbow to port adapter.

OEM Customization and Quality Traceability

We manufacture matching hydraulic adapters and hose assemblies alongside our hose range, so specials are quoted engineering work rather than a favour. Laser marking of your part number, logo, date code and batch code is available on the body or the hex, and custom finishes, non-standard threads, alternative O-ring elastomers and special body angles are quoted from your drawing or sample, normally within 24 hours.

Every batch is traceable from raw material to finished part. Batch records, dimensional results and material test reports are available with the goods, third-party inspection such as BV or SGS can be arranged, and finished assemblies are pressure tested with results recorded for the lot. Ordering the 90 degree elbow metric male adapter 2E9 on a repeat schedule keeps one drawing, one O-ring size and one traceability record behind every corner.

FAQ

Q: Is a metric male O-ring stud end the same as a DIN 2353 24 degree cone stud end? A: No. This stud end seals with an O-ring against a flat port face as defined by ISO 6149-2 in an ISO 6149-1 port, while a DIN 2353 / ISO 8434-1 24 degree cone stud seals on a cone machined inside the port. Thread sizes may look identical, but the sealing interface differs and the two must not be mixed.

Q: Can I use this elbow in a 74 degree cone port such as an SAE J514 style port? A: No. A 74 degree cone joint seals on a cone, not on a flat face with an O-ring, so a 2E9 elbow will not seal there. Metric 74 degree cone parts are a separate sealing system and are not interchangeable with this ISO 6149 stud end.

Q: What pressure can the 90 degree elbow metric male adapter 2E9 take? A: The data sheet has no pressure column for this series, so the rating follows the port standard and the grade of the parts fitted downstream, and the finished assembly is only as strong as its weakest member. Request a rating table for your combination and we will state the figure and the test method.

Q: Why are the two ends the same size? A: Every row of this series is an equal elbow with one thread size and one O-ring size, so ports E and F always match. Ordering a mixed corner means ordering a different adapter family.

Q: Why is the largest row printed as 2E9-51? A: The data sheet prints the largest size, M52x2 with 40×3.1 O-rings, as 2E9-51. Quote it as printed together with the thread callout so the row cannot be confused with a neighbouring size.

Q: Which O-ring material should I order? A: NBR is standard for general mineral-oil hydraulic service across roughly -40 °C to +120 °C. Choose FKM for higher temperatures or chemically aggressive media, and tell us the fluid and temperature so the elastomer can be confirmed.

Q: What is the smallest order and the lead time? A: Small quantities are accepted for samples and trials, standard rows are held for fast dispatch, and made-to-drawing specials are normally quoted within 24 hours with a lead time stated on the quotation.

Solicitar un presupuesto

Send both port threads, the port standard on each connection, the material and surface treatment, the quantity you need, and the fluid and temperature of the circuit. To speed up a quotation on the 90 degree elbow metric male adapter 2E9, add the drawing and a photograph of one port face. We reply with part number, confirmed dimensions, price and lead time within 24 hours, and trial samples can be arranged at the same time.

Browse the full Hydraulic Adapters range for the complete family, or contact us to request a quote, mill test reports, and samples.