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Steel Adapter, 9/16-18 Male SAE O-Ring Face Seal To 1/4-18 Male NPT, Straight

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A
1.24
Alternate Part Numbers
Alternate Part Number C1CU98, Alternate Part Number MI-00306441, Alternate Part Number MINO-00015F55519
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
0.56
End Size 2
0.25
End Type 1
ORS
End Type 2
NPTF
Minimum Working Temperature
-40
Seal Part if Included
FF9446-11
Supplier Part Number
FF2031T0404S
Thread 1
9/16-18
Thread 2
1/4-18
Thread Sealant
No
Tube I.D. 1
0.17
Tube I.D. 2
0.28
Tube O.D.
0.25
Tube O.D.
0.25
Product Weight
1.00 lbs
Product Questions & Answers 4

Product Questions & Answers

I need an adapter to go from an O-ring face seal to a pipe thread. Will this do the trick?
Question by: Pete D on Jan 30, 2026, 7:43 AM
This straight adapter is designed to connect a 9/16-18 male SAE O-Ring Face Seal to a 1/4-18 male NPT.
Answer by: Customer Support on Jan 31, 2026, 5:38 PM
Trying to hook an ORFS line to a 1/4 NPT port, is this the straight adapter for that?
Question by: Janice F on Aug 10, 2025, 7:26 AM
For joining those two thread styles, it matches up a 9/16-18 male SAE O-ring face seal end to a 1/4-18 male NPTF end in a straight body.
Answer by: Customer Support on Aug 11, 2025, 8:36 AM
got a hose end with a 9/16-18 ORFS male on it and i need to go into a 1/4-18 npt port. is FF2031T0404S the right straight adapter?
Question by: Ralph L on Jan 25, 2026, 3:38 PM
Match-up wise, that is exactly what this adapter is: a straight steel fitting with a 9/16-18 male SAE O-Ring Face Seal on one end and a 1/4-18 male NPT on the other.
Answer by: Customer Support on Jan 26, 2026, 5:19 PM
Got a line running to a pressure gauge on a food processing skid, does this adapter work for that kind of setup?
Question by: Harvey S on Dec 31, 2025, 10:24 AM
Food and beverage processing is actually one of the listed applications for this adapter, so yes, it fits right into that kind of use. The 9/16-18 male SAE O-Ring Face Seal end gives you a leak-resistant seal without relying on thread deformation, which matters on instrumentation lines where you want a clean, repeatable connection. The other end is 1/4-18 male NPT, which is the standard thread you'll find on most gauge ports and sensor fittings. Steel construction holds up fine in typical processing environments.
Answer by: Customer Support on Jan 1, 2026, 11:43 AM

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