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Steel Metric Flareless Fitting, 18.00 mm L Series Cap

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Description & Features

Forged or drawn from high-quality steel, this 18 mm tube OD fitting is designed to cap hydraulic lines in L Series metric flareless systems. The Steel Metric Flareless Fitting, 18.00 mm L Series Cap conforms in design and dimensions to current DIN standards, making it a reliable choice for metric hydraulic systems requiring precise, standardized connections.

Rated to a maximum operating pressure of 400 bar and suitable for temperatures up to 120°C, this cap is well suited to demanding industrial hydraulic applications. Manufactured under the Eaton Aeroquip brand, it carries catalog number C1KX58 and is part of the Metric Steel Flareless Fittings product line.

SKU: WAL612335

Supplier Part Number (MPN): WAL612335

Alternate Part Numbers: C1KX58

Specifications

Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
L
21
Maximum Operating Pressure
400
Series
L
Supplier Part Number
WAL612335
Tube O.D.
18
Tube O.D.
18
Alternate Part Numbers
Alternate Part Number C1KX58, Alternate Part Number MINO-00015X16070
Product Weight
0.08 lbs

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Product Questions & Answers (3)

Question by: Merle J on Apr 25, 2025, 10:32 AM
what's the max pressure rating on this cap fitting, and is it safe for continuous line use?
Answer by: Customer Support on Apr 27, 2025, 6:18 AM
For the L Series, the pressure rating runs up to 400 bar, and the construction is forged or drawn high quality steel, so it holds up well under sustained line pressure. The 4:1 safety factor built into the series design gives you a solid margin for continuous hydraulic applications. Just make sure your system temps stay within the 120 degrees Celsius limit and you are good to run it hard.
Question by: Randy S on Jul 20, 2025, 10:05 AM
got an 18mm tube line, is this cap the right size for it
Answer by: Customer Support on Jul 22, 2025, 6:59 AM
It’s built around an 18.00 mm tube outside diameter and it’s an L Series metric flareless cap, so it matches an 18 mm L Series tube fitting size.
Question by: Roger F on Mar 12, 2026, 6:31 AM
What size tubing does this cap fit? I wanna make sure it's the right one before I order.
Answer by: Customer Support on Mar 13, 2026, 7:44 AM
It's designed for tubing with an outer diameter of 18 mm.