Low-Pressure Hose Tail – UNO Male – Straight – Crimp-On

A low-pressure UNO (SAE O-ring boss) male on a straight crimp tail, for O-ring boss ports on return and drain lines.

Crimp-on – how it goes together

This is the tail (stem) only. It is crimped onto low-pressure hose with a matching ferrule, which is a separate part. This is a low-pressure tail on its own crimp system. It does not take the FS‑R2 Multi‑Fit ferrule used on our braided-hose tails, and the crimp diameters are different. Call 1300 146 737 with your hose type and we will match the right ferrule to it.

How to choose

• A straight tail is the default. Only go to a bend when the hose would otherwise leave the port at an angle it does not like.
• Low-pressure duty only.
• Seals on an O-ring that squashes into the port face, not on the thread.

⬇ Thread Identification Chart (PDF)

Where You’ll Find It

• SAE O-Ring Boss Male (UNO/UNF) – Cylinder end caps, pump and valve bosses on US-built plant. Common on Australian-assembled cylinders too, where it is usually called UNO.

Cross-Reference

• SAE O-Ring Boss Male (UNO/UNF) – SAE J1926 / ISO 11926 straight thread O-ring boss. Also written ORB, SAE ORB or UNO. Thread form is UN/UNF.

Parker, Gates, Aeroquip and Ryco all manufacture to these same standards under their own part numbering, so a fitting built to the standard above will mate with theirs.

Cross-references are given at series level as a guide to the standard, not as a part-for-part substitution. Always confirm the thread form, size and seal type against the port before ordering.

Brand: Ayrtec – mild steel body with a plated finish, manufactured to the standard listed above.

Watch: How to Identify Hydraulic Hose Fittings and Hydraulic Adaptors JIC and BSP

Technicians Advice

Check the O-ring is seated and undamaged before you start the thread. A UNO O-ring that rolls or nips on the way in leaks straight away, and you cannot see it once the fitting is home.

Express shipping Australia-wide. We dispatch daily to New South Wales, Victoria, Queensland, Western Australia, South Australia, Tasmania, the Australian Capital Territory and the Northern Territory – Sydney, Melbourne, Brisbane, Perth, Adelaide, Hobart, Canberra and Darwin, plus regional and remote sites.

Ayrtec low-pressure crimp-on hose tails, stocked and dispatched by Hydraulic.Online.

Need a hand? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.