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Steel Adapter, 1-11/16-12 Male O-Ring Face Seal Cap

Description & Features

Designed for use in O-Ring Face Seal (ORS) hydraulic circuits, the Steel Adapter, 1-11/16-12 Male O-Ring Face Seal Cap is part of the Eaton Aeroquip FF9863 Series and provides a reliable means of capping off male ORS ports to seal unused or temporarily inactive connections. The 1-11/16-12 thread specification corresponds to a -20 size fitting, with a measured dimension of 1.17 for the A attribute, making it suitable for larger-line hydraulic assemblies where a secure, leak-resistant seal is required.

Manufactured under the Eaton Aeroquip catalog reference C1ZX84, this cap assembly is a recognized component within Eaton's broader hydraulic adapter line. Steel construction supports use in demanding hydraulic environments where port protection and fluid containment are priorities.

SKU: FF9863-20S

Supplier Part Number (MPN): FF9863-20S

Alternate Part Numbers: C1ZX84, MI-00444610, MINO-00015I01241

Specifications

A 1.17	Alternate Part Numbers Alternate Part Number C1ZX84, Alternate Part Number MI-00444610, Alternate Part Number MINO-00015I01241, Alternate Part Number MINO-00925X13390	Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	End Gender 1 13553	End Type 1 ORS	Minimum Working Temperature -40	Supplier Part Number FF9863-20S	Thread 2 1-11/16-12	Thread Sealant No	Tube O.D. 1.25	Tube O.D. 1.25	Product Weight 0.58 lbs

Similar Products

Model Number	Tube O.D.	Thread 2	A
FF9863-04S Steel Male ORS Cap	0.25	9/16-18	0.66
FF9863-06S Steel Male ORS Cap	0.38	11/16-16	0.75
FF9863-08S Steel Male ORS Cap	0.5	13/16-16	0.9
FF9863-10S Steel Male ORS Cap	0.63	1-14	1
FF9863-12S Steel Male ORS Cap	0.75	1-3/16-12	1.1
FF9863-16S Steel Male ORS Cap	1	1-7/16-12	1.17

Product Questions & Answers (4)

Question by: Patty G on May 28, 2025, 7:01 PM

what's the tube OD on this cap, and is that 1-11/16-12 thread the male end or the female side?

Answer by: Customer Support on May 30, 2025, 6:18 AM

The tube OD on this cap is 1.25 inches. The 1-11/16-12 thread is the male O-ring face seal end, and the cap itself is female, meaning it threads over that male fitting to seal it off. So you've got a male ORS port on your line, and this cap screws onto it to close it up.

Question by: Joyce B on Aug 10, 2025, 11:36 AM

i’ve got a 1-11/16-12 ORFS port I need to deadhead for now. Is FF9863-20S the right cap for that?

Answer by: Customer Support on Aug 12, 2025, 10:26 AM

For a temporary close-off on an O-Ring Face Seal connection, this part is an ORS cap assembly with a 1-11/16-12 male thread, so it matches that thread callout and style.

Question by: Rhonda B on Dec 29, 2025, 5:03 PM

What size is the O-ring face seal on this cap? I'm trying to match it up to something I already got.

Answer by: Customer Support on Dec 30, 2025, 8:34 PM

This adapter cap has a 1-11/16-12 male O-ring face seal. That should help you find the right match.

Question by: Chad A on Dec 5, 2025, 9:24 PM

what thread size is on this cap? need to make sure it'll fit a 1-11/16-12 port before I order

Answer by: Customer Support on Dec 7, 2025, 6:17 AM

The male fitting on this cap is 1-11/16-12, which is a standard O-Ring Face Seal thread size. It'll seat directly onto a matching female ORS port and create a clean, leak-resistant seal when torqued down properly. Just confirm your port matches that thread pitch and you're good to go.

Steel Adapter, 1-11/16-12 Male O-Ring Face Seal Cap

Description & Features

Specifications

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Product Questions & Answers (4)