Ideal for ensuring seamless connectivity in industrial applications the Steel Adapter 11/16-16 Male O-Ring Face Seal To 9/16-18 Male JIC 37 deg Flare Straight offers precision and reliability. This adapter manufactured by Brennan Industries Inc is expertly designed to facilitate the transition between O-ring face seal and JIC 37 flare fittings providing a secure and leak-proof connection.
Featuring a robust steel construction it ensures durability and longevity even in demanding environments. The adapter's 11/16-16 and 9/16-18 threads offer compatibility with a wide range of equipment making it versatile for various uses.
The straight design of the adapter aids in straightforward installation and maintenance enhancing operational efficiency. With a tube outer diameter of 0.38 inches it is suitable for various industrial settings demanding high performance and reliability in their fluid transfer systems.
MPN: C1EZ18
Supplier Part Number: FS6403-06-06
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Specifications
Alternate Part Numbers
Alternate Part NumberC1EZ18, Alternate Part Number MI-00264830, Alternate Part Number MINO-00028F00347
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
L
1.30
Supplier Part Number
FS6403-06-06
Thread 1
11/16-16
Thread 2
9/16-18
Thread Sealant
No
Tube O.D.
0.38
Tube O.D.
0.38
Product Weight
0.10 lbs
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Product Questions & Answers (4)
Question by: Janet W on Jun 29, 2025, 4:03 PM
Will this adapter work to connect a 11/16-16 O-ring face seal to a 9/16-18 JIC flare fitting?
Answer by: Customer Support on Jul 1, 2025, 11:24 AM
Yes, this steel adapter is specifically made to connect an 11/16-16 male O-ring face seal to a 9/16-18 male JIC 37-degree flare fitting. It's a straight adapter, so it'll give you a direct connection.
Question by: Freddie M on Apr 20, 2025, 9:19 PM
Got a hydraulic line running 3/8 tube with a JIC fitting on one end and an o-ring face seal port on the other. this adapter gonna bridge that gap straight across?
Answer by: Customer Support on Apr 22, 2025, 4:32 PM
For a #6 application, yes. One end is 11/16-16 Male O-Ring Face Seal and the other is 9/16-18 Male JIC 37 degree flare, sized for 3/8 inch tube OD on the JIC side. Both ends are male, so you're threading into female ports on each piece of equipment. Straight configuration means no offset, just a direct inline connection between those two fitting types.
Question by: Kent G on Nov 4, 2025, 7:14 PM
trying to swap an old fitting out, is this the straight adapter that goes from 11/16-16 MORS over to 9/16-18 male JIC?
Answer by: Customer Support on Nov 6, 2025, 6:18 AM
It is a straight steel adapter with 11/16-16 male O-ring face seal on one end and 9/16-18 male JIC 37 degree flare on the other, commonly called #6 MORS x #6 MJ.
Question by: Roy W on Dec 12, 2025, 7:21 AM
got a JIC 37 flare port on my hydraulic manifold and need to tie into an O-ring face seal line, this straight adapter do that job?
Answer by: Customer Support on Dec 14, 2025, 6:28 AM
That's what this fitting handles. One end is 11/16-16 male O-ring face seal, the other is 9/16-18 male JIC 37 degree flare. Run it between those two connection types and you've got a solid, leak-resistant joint. Both thread sizes are standard, so if your manifold port and your ORFS line match those specs, you're in good shape. Overall length comes in at 1.3 inches, which keeps the assembly compact.
