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Steel Adapter, 11/16-16 Male SAE O-Ring Face Seal To 3/8-18 Male NPT, Straight

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Description & Features

Part of the Eaton Aeroquip FF2031T Series, this straight steel adapter connects an 11/16-16 Male SAE O-Ring Face Seal (ORS) thread to a 3/8-18 Male NPT thread, making it a practical solution for joining ORS and NPTF connections in a single inline fitting. The overall assembly length (A dimension) is 1.3 inches.

Suited for demanding industrial environments, this adapter sees regular use in marine and military equipment, chemical processing systems, offshore drilling, and food and beverage processing, as well as pulp and paper industry applications. The SAE O-Ring Face Seal end provides a leak-resistant metal-to-elastomer seal, which is particularly well-suited where fluid integrity is critical.

Catalog reference number C1CV11 can be used to cross-reference this part within Eaton Aeroquip documentation.

SKU: FF2031T0606S

Supplier Part Number (MPN): FF2031T0606S

Alternate Part Numbers: C1CV11, MI-00306443, MINO-00015F55521

Specifications

A
1.30
Alternate Part Numbers
Alternate Part Number C1CV11, Alternate Part Number MI-00306443, Alternate Part Number MINO-00015F55521, Alternate Part Number MINO-00925X13079
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13556
End Size 1
0.69
End Size 2
0.38
End Type 1
ORS
End Type 2
NPTF
Minimum Working Temperature
-40
Supplier Part Number
FF2031T0606S
Thread 1
11/16-16
Thread 2
3/8-18
Thread Sealant
No
Tube O.D.
0.38
Tube O.D.
0.38
Product Weight
0.05 lbs

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Product Questions & Answers (3)

Question by: Rick R on Oct 26, 2025, 8:15 AM
What's the A dimension on this adapter?
Answer by: Customer Support on Oct 27, 2025, 12:30 PM
The overall assembly length, or A dimension, is 1.3 inches.
Question by: Ronnie M on Apr 13, 2025, 2:07 PM
what industries is this adapter actually built for, like where does it see the most use?
Answer by: Customer Support on Apr 15, 2025, 6:49 AM
Marine and military equipment, offshore drilling, chemical processing, food and beverage use, and pulp and paper facilities are all listed applications for this fitting. The SAE O-Ring Face Seal end creates a metal-to-elastomer seal that holds up well where fluid integrity matters, so it tends to show up in jobs where a leak isn't just inconvenient but a real problem.
Question by: Judy B on Jun 1, 2025, 6:34 PM
got a hose end with 11/16-16 ORS on it and the port is 3/8-18 npt. is this the right little straight adapter to tie those together?
Answer by: Customer Support on Jun 2, 2025, 7:02 PM
Built for exactly that mix, it has an 11/16-16 male SAE O-Ring Face Seal (ORS) on one end and a 3/8-18 male NPT on the other, in a straight inline adapter.