Products

TEE Adapter ORFS M ORFS F LATERAL

Helesul ORFS hydraulic adapters (O-Ring Face Seal – Flat Face) were designed to eliminate leaks and ensure maximum reliability in high-pressure circuits. Thanks to the O-ring sealing system, they deliver consistent performance even under pulsation, vibration, and severe thermal variations.
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Ideal for tractors, harvesters, dump bodies, and road platforms, Helesul ORFS adapters ensure maximum equipment availability and operability without unexpected downtime.

TEE Adapter ORFS M ORFS F LATERAL
  • Technical Details
  • Applications
  • Size Table (ORFS)
Technical Details
  • Applicable standards: ISO 8434-3;
  • Maximum operating pressure: 420 bar (6,000 PSI);
  • Working temperature: -30°C to +120°C;
  • Body material: carbon steel;
  • Surface finish: trivalent zinc plating;
  • O-ring: NBR 90 Shore A;
  • Certification: ISO 9001.
Applications

From sprayers to lifting platforms, ORFS adapters maintain leak-tight sealing where JIC 37° or BSP connections fail:

 

1. Sprayer booms – prevent contamination of agrochemicals.

 

2. Harvester cylinders – withstand cyclic pressure peaks.

 

3. Dump body tipping – eliminate oil losses and increase safety.

 

4. Side mowers – resist intense vibration.

 

5. Vehicle platforms – preserve integrity during load lifting.

Size Table (ORFS)

 

 

 

 

 

 

 

 

 


Nominal Size

External Thread (d) [mm]

Internal Thread (D) [mm]

9/16"

14,3

12,8

11/16"

17,5

15,9

13/16"

20,6

19,0

1"

25,4

23,8

1.3/16"

30,2

27,9

1.7/16"

36,5

34,2

1.11/16"

42,9

40,5

2"

50,8

48,41

 

FREQUENTLY ASKED QUESTIONS
Are ORFS adapters compatible with other standards?

It is possible to interconnect ORFS to JIC, BSP or metrics using specific adapters. We recommend checking the pressure, thread and sealing profile of each transition to maintain tightness and safety.

Do I need to retighten the connections after some time of use?

Under normal conditions, no. The O-ring compensates for microsettlements. Use a torque wrench when assembling and follow the torque table by gauge. Frequent retightening may damage the O-ring.

PTFE tape or liquid sealant?

Use PTFE tape if the connection will be retightened periodically. Prefer anaerobic sealant for permanent sealing and greater vibration resistance.

ORFS (O-Ring Face Seal) hydraulic adapters are the ultimate solution for preventing leaks in circuits up to 420 bar, even under intense pulsation, constant vibration, and severe thermal variations. Designed for tractors, harvesters, dump bodies, and road platforms, they deliver superior reliability and drastically reduce equipment downtime.

The elastic seal on the flat face eliminates microleaks without requiring the metal-to-metal deformation typical of 37° flare fittings. This results in:

  • Up to 30% lower assembly torque, preventing overtightening.

 

  • Retightening is almost unnecessary, helping maintain stable operating pressure.

 

  • Extended service life thanks to the simple replacement of the O-ring.

 

All Helesul hydraulic adapters are manufactured in accordance with ISO, SAE, and DIN standards, ensuring interchangeability, safety, and predictable performance in the field.

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