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Flexmaster Pipe & Tube Joint, 1.25 Inch Pipe, Straight

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Description & Features

Eaton Aeroquip Flexmaster straight joint designed for connecting 1.25 inch pipes with a 1.66 inch outer diameter. These general-purpose joints offer a reliable seal with Buna-N material, ensuring compatibility in a wide range of applications.

Constructed from durable plated steel, this Flexmaster Pipe & Tube Joint can withstand minimum working temperatures down to -30 degrees. The bulged, straight-through design accommodates angular misalignment up to 4° per end. Installation requires a torque rating of 90 IN-LBS.

SKU: NH1600C125B0325

Supplier Part Number (MPN): NH1600C125B0325

Alternate Part Numbers: C1JP76

Specifications

Application
General purpose
B
2.71
C
3.85
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13555
End Size 1
1.25
End Size 2
1.25
End Type 1
Compression
End Type 2
Compression
Materials
Plated Steel
Minimum Working Temperature
-30
Pipe O.D.
1.66
Pipe Size
1.25
Seal Material
Buna-N
Seal Part if Included
NK1000063C250
Supplier Part Number
NH1600C125B0325
Thread Sealant
No
Torque Rating
90 IN-LBS
Torque Rating
90 IN-LBS
Type
STD
Alternate Part Numbers
Alternate Part Number C1JP76
Product Weight
1.27 lbs

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Product Questions & Answers (2)

Question by: Scott M on Nov 29, 2025, 9:45 AM
got a 1.25 inch pipe connection that keeps giving me grief with slight angle changes in the run, will this joint handle that kind of movement?
Answer by: Customer Support on Nov 30, 2025, 7:52 PM
Up to 4 degrees of angular misalignment per end is what these are built to absorb, so minor shifts in pipe alignment are well within range. The bulged, straight-through design is what makes that possible. One thing worth knowing up front, this joint seals the connection, but it's not meant to hold the hydraulic lines system together on its own. You'll still need your hangers, guides, and anchors in place to keep everything from shifting along the pipe.
Question by: Joyce W on Apr 18, 2025, 5:54 PM
got a 1-1/4 pipe with a 1.66 OD, is this the right straight Flexmaster joint for it?
Answer by: Customer Support on Apr 20, 2025, 12:36 PM
Match-up looks right for size. This straight Flexmaster joint is meant for 1.25 inch pipe and calls out a 1.66 inch pipe outside diameter, with female compression ends on both sides.