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Steel Adapter, 11/16-16 Male O-Ring Face Seal Cap

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Description & Features

Designed for capping off O-Ring Face Seal (ORS) port connections, this steel adapter with an 11/16-16 male thread provides a reliable sealing solution for hydraulic circuits requiring port protection or circuit isolation. Manufactured by Eaton Aeroquip as part of the FF9863 Series, it is built to handle the demands of industrial hydraulic systems where leak-free sealing at open ports is essential.

The Steel Adapter, 11/16-16 Male O-Ring Face Seal Cap features a straight configuration and is cataloged under Eaton Aeroquip catalog number C1CV77. The ORS face seal design ensures a positive, metal-to-metal contact seal supported by an O-ring, making it well-suited for high-pressure hydraulic applications across mobile and industrial equipment.

SKU: FF9863-06S

Supplier Part Number (MPN): FF9863-06S

Alternate Part Numbers: 91251179, C1CV77, MI-00306485, MINO-00015F55561

Specifications

A
0.75
Alternate Part Numbers
Alternate Part Number 91251179, Alternate Part Number C1CV77, Alternate Part Number MI-00306485, Alternate Part Number MINO-00015F55561, Alternate Part Number MINO-00925X13385
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Size 1
0.69
End Size 2
0.38
End Type 1
ORS
Minimum Working Temperature
-40
Supplier Part Number
FF9863-06S
Thread 2
11/16-16
Thread Sealant
No
Tube O.D.
0.38
Tube O.D.
0.38
Product Weight
0.07 lbs

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Product Questions & Answers (4)

Question by: Troy H on Dec 19, 2025, 1:00 PM
I need a cap for an O-ring face seal, and this looks right. Just wanna make sure this'll fit a 11/16-16 male thread?
Answer by: Customer Support on Dec 20, 2025, 6:27 PM
This adapter cap is indeed designed for use with an 11/16-16 male O-Ring Face Seal. It should provide a secure fit when used with compatible components.
Question by: Wes C on Jul 12, 2025, 4:15 PM
what thread size does this cap fit on exactly? need to make sure before i order
Answer by: Customer Support on Jul 14, 2025, 6:22 AM
The cap fits an 11/16-16 male O-Ring Face Seal thread. That corresponds to a 3/8 inch tube O.D. connection, so if your port or fitting end matches those specs, you're in the right spot.
Question by: Keith R on Dec 6, 2025, 3:47 PM
got an 11/16-16 ORFS port i need to cap off, is this the right one?
Answer by: Customer Support on Dec 8, 2025, 2:04 PM
For an 11/16-16 O-Ring Face Seal connection, this cap assembly matches that thread (11/16-16) and is part of the FF9863 ORS accessories line, so it’s intended for capping an ORFS end with that thread size.
Question by: Cody E on Oct 27, 2025, 7:46 AM
Just want to make sure, this is just a cap, right? Not the fitting itself?
Answer by: Customer Support on Oct 29, 2025, 6:45 AM
Correct, this is an ORS (O-Ring Face Seal) cap assembly, designed to protect the fitting from contamination and damage when it's not in use.