Automotive
Construction
Agriculture
Livestock
Planting
Spray
Male DKO Tee Adapter x Female DKO Side Outlet
This is where Helesul DKO hydraulic adapters (Double Cone O-ring) stand out as the strategic choice for manufacturers and operators who demand unwavering reliability, delivering a robust solution built on versatility, superior sealing, and global compatibility.
- Technical Details
- Applications
- Dimensions Table (DKO)
- Standards: DIN 2353 (L, S) / ISO 8434-1;
- Outside diameters: 6 mm – 42 mm (metric tubes);
- Maximum operating pressure: 420 bar (6,000 PSI);
- Operating temperature: -40°C to +120°C;
- Body material: carbon steel;
- Surface finish: trivalent zinc plating;
- O-ring: NBR 90 Shore A;
- Certification: ISO 9001.
Harvesters and Agricultural Sprayers
In articulated boom circuits and hydraulic controls exposed to constant vibration and uneven terrain, DKO hydraulic adapters maintain stable sealing, mitigate soil contamination from oil leaks, and reduce corrective interventions. The dual sealing withstands rapid cycles and typical field maneuver pressure spikes, preserving system efficiency.
Tractors and Soil Preparation Implements
In cylinders for reversible plows, leveling graders, and subsoilers, the 24° profile with O-ring provides robust connections against impacts and cyclic loads, ensuring precise actuation responses. Torque repeatability minimizes loosening and sustains productivity during extended work shifts.
Dump Trucks and Highway Trucks
During dump bed and platform tilting, DKO fittings enable safe, continuous operation by maintaining total sealing throughout repetitive cycles. High torque resistance helps preserve assembly integrity after periodic maintenance and fleet inspections.
Side Mowers and Sweepers
Exposed to dust, debris, and temperature variations, articulated arm systems benefit from the resilient O-ring sealing and conical seat, reducing micro-leaks and maintaining stable pressure. This extends maintenance intervals and optimizes equipment availability.
Presses and Compactors
In machines with constant high pressure, dual sealing prevents progressive fluid losses that degrade force and speed. The result is more consistent cycles, lower oil consumption, and improved output per hour — especially in continuous industrial operations.
 |
Nominal Sizer |
Tube [mm] |
External Thread (d) [mm] |
Internal Thread (D) [mm] |
|
|
|
Light Series |
Heavy Series |
|
|
|
|
M12x1,5 |
6 |
- |
12 |
10,4 |
|
|
M14x1,5 |
8 |
6 |
14 |
12,4 |
|
|
M16x1,5 |
10 |
8 |
16 |
14,4 |
|
|
M18x1,5 |
12 |
10 |
18 |
16,4 |
|
|
M20x1,5 |
- |
12 |
20 |
18,4 |
|
|
M22x1,5 |
15 |
14 |
22 |
20,4 |
|
|
M24x1,5 |
- |
16 |
24 |
22,4 |
|
|
M26x1,5 |
18 |
- |
26 |
24,4 |
|
|
M30x2 |
22 |
20 |
30 |
27,8 |
|
|
M36x2 |
28 |
25 |
36 |
33,8 |
|
|
M42x2 |
- |
30 |
42 |
39,8 |
|
|
M45x2 |
35 |
- |
45 |
42,8 |
|
|
M52x2 |
45 |
38 |
52 |
49,8 |
|
In general, yes, thanks to the metric and UNF options and the use of adapters when necessary. Check the thread/port pair and the machine pattern.
Fewer microleaks, faster assembly and less rework, which translates into more available machines and lower fluid consumption throughout the life cycle.
DKO (Double Cone O-ring) adapters use a double O-ring sealing system, while traditional JICs have only one sealing cone. The DKO system reduces leaks by up to 98% and offers a useful life 3 times longer, with tolerance to multiple assembly and disassembly without loss of efficiency.
Use PTFE tape if the connection will be retightened periodically. Prefer anaerobic sealant for permanent sealing and greater vibration resistance.
In agricultural hydraulic circuits, seal failures can bring a harvester to a complete stop in the middle of harvest season — driving up maintenance costs and threatening operational continuity. The dual O-ring sealing system helps eliminate leaks even under intense vibration and pressure spikes, reducing unplanned downtime and fluid loss by up to 95% when installed according to specification.
The self-centering 24° cone speeds up assembly by up to 40% compared to conventional fittings, minimizes rework, and improves torque repeatability.
Helesul DKO (Double Cone O-ring) hydraulic adapters are engineered for high-reliability sealing in high-pressure hydraulic systems, combining a self-centering 24° cone with an O-ring to deliver consistent performance in agricultural machinery and on-highway applications.
Built for durability, they reduce leaks, simplify installation, and maximize equipment uptime — even under vibration, heavy duty cycles, and harsh operating environments.
All Helesul hydraulic adapters are manufactured in compliance with ISO, SAE, and DIN standards, ensuring interchangeability, safety, and predictable field performance.
