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Steel Adapter, 1-5/16-12 Male SAE O-Ring Boss (Straight Thread O-Ring) Socket Hex Plug

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Description & Features

Designed for high-performance applications, the Steel Adapter, 1-5/16-12 Male SAE O-Ring Boss (Straight Thread O-Ring) Socket Hex Plug is an essential component in industrial settings. With its robust construction, this adapter is ideal for use in demanding environments such as marine and military sectors, chemical processing, pulp and paper industries, food and beverage processing, and off-shore drilling.

This adapter features a 1-5/16-12 thread size and a male SAE O-Ring Boss end type, ensuring a secure and leak-proof connection. The use of the Straight Thread O-Ring to Straight Thread O-Ring Adapters model enhances compatibility and reliability. The product is manufactured under the Ecc brand by Danfoss Power Solutions (II LLC Aeroquip), guaranteeing quality and performance.

With a minimum working temperature of -40 degrees, this steel adapter is built to withstand harsh conditions. It is classified under the UNSPSC code 27121700 and adheres to the EAR99 export control classification number, ensuring compliance with international trade regulations.

SKU: FF2138-16S

Supplier Part Number (MPN): FF2138-16S

Alternate Part Numbers: C1FQ26

Specifications

A
0.77
Alternate Part Numbers
Alternate Part Number C1FQ26
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
B
1.50
C
0.63
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Size 2
1
End Type 1
SAE ORB
Minimum Working Temperature
-40
Seal Part if Included
22617-16
Supplier Part Number
FF2138-16S
Thread 2
1-5/16-12
Thread Sealant
No
Tube O.D.
1
Tube O.D.
1
Product Weight
0.24 lbs

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Product Questions & Answers (4)

Question by: Troy H on Sep 19, 2025, 7:33 AM
got a port that's been capped off on a hydraulic manifold and I need to plug it with something that'll hold -- this a straight thread setup or does it rely on a taper to seal?
Answer by: Customer Support on Sep 21, 2025, 6:38 AM
Straight thread is exactly what this is. The 1-5/16-12 thread engages mechanically, and sealing is handled by the O-ring against the boss face rather than thread deformation. That means you get a reliable, leak-resistant seal without needing to torque it down like a pipe fitting. The O-ring is included with the plug, so you're ready to install without hunting down a separate seal.
Question by: Dustin A on Apr 5, 2025, 6:14 AM
got a port that’s 1-5/16-12, is this the right socket plug for it?
Answer by: Customer Support on Apr 6, 2025, 10:06 AM
The key match is the thread callout. This plug is a 1-5/16-12 male SAE O-Ring Boss (straight thread O-ring) style, so it’s meant to thread into a 1-5/16-12 SAE ORB female port and seal with an O-ring, not with thread sealant.
Question by: Jean B on Mar 2, 2026, 12:52 PM
got a port i need to cap off, is this one of them socket hex plugs for an SAE ORB port?
Answer by: Customer Support on Mar 4, 2026, 11:12 AM
Function-wise, yes. It’s a straight thread SAE O-Ring Boss male socket hex plug, meant to thread into a matching SAE ORB female port and seal with an O-ring at the boss.
Question by: Danny R on Jan 7, 2026, 5:05 PM
Will this plug work with standard SAE O-ring ports, or is it meant for something special?
Answer by: Customer Support on Jan 8, 2026, 5:26 PM
This adapter is designed to fit any standard SAE male O-ring boss port. You shouldn't have any trouble getting it to seal properly as long as the port meets SAE specifications.