Designed for use in tube and pipe joint assemblies, the Danfoss / Eaton Flexmaster Sleeve is a precision-engineered fitting component distributed under the Aeroquip brand. It is classified as a line/hose/tube end type connection, making it suited for hydraulic fluid conveyance applications where reliable, leak-resistant tube engagement is required.
As a Flexmaster sleeve, this part functions as the mechanical compression element in Flexmaster-style fittings, securing the tube end and maintaining a consistent seal under hydraulic system pressure. It is sold individually (per each) and carries a standard lead time of seven days.
SKU: NK1237-125B0550
Supplier Part Number (MPN): NK1237-125B0550
Loading related products…
Specifications
Alternate Part Numbers
Alternate Part NumberMINO-00925X14401
Class
WEB-ITEM
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Type 2
Line/Hose/Tube
ICC
Tube and Pipe Joints
Item Type
Flexmaster Sleeve
Language
English
Net Pack Quantity Units
EA
NMFC
50
Supplier Part Number
NK1237-125B0550
Product Weight
0.99 lbs
Product Questions & Answers (1)
Question by: Dwayne C on Feb 24, 2026, 1:08 PM
Is this sleeve sold individually?
Answer by: Customer Support on Feb 26, 2026, 9:30 AM