Overview
The Ermeto hydraulic tube fitting set consists of four high-pressure connectors designed for professional hydraulic system installations. Ermeto fittings are engineered by Parker Hannifin using proprietary EO-PSR technology that creates a controlled progressive bite into the tube for secure, leak-free connections. This four-piece set is ideal for maintenance, repair, or system upgrades in industrial hydraulic applications requiring dependable tube-to-tube or tube-to-component connections.
Key Features
- EO-PSR Progressive Ring Technology — creates leak-free, high-pressure connections without flaring
- Available in steel or stainless steel construction for corrosion-resistant applications
- Reusable design — fittings can be disassembled and reassembled multiple times
- Cr(VI)-free surface treatment for enhanced corrosion resistance
- Wide operating temperature range: -40°C to +250°C (steel), -60°C to +400°C (stainless)
- Pre-assembly capability for faster final installation
Technical Specifications
Maximum operating pressure ranges from 16–630 bar depending on fitting series (Light or Heavy). Temperature rating varies by material: steel fittings operate from -40°C to +250°C; stainless steel from -60°C to +400°C. Ermeto fittings are available in sizes from 6 to 38/42 per DIN specifications. All components meet stringent industrial weld and hydraulic standards.
Typical Applications
- Mobile equipment and construction machinery
- Agricultural and earthmoving equipment
- Manufacturing and heavy machinery
- Automotive and transportation systems
- Marine and offshore hydraulic systems
- Oilfield and chemical transfer applications
- Power station and shipbuilding installations
Compatibility & Replacements
Compatible With
- All Parker Ermeto tube fittings and components
- EO-PSR, EO-2, and EO2-FORM functional nut series
- DIN-standard high-pressure hydraulic tubing
- Hydraulic systems rated 16–630 bar operating pressure
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The SKU A-4-2-411 does not correspond to published Parker Ermeto part numbers. For identification of exact replacement fittings, consult your hydraulic schematic or contact Parker Hannifin directly.
Works With
- Parker Hannifin hydraulic component families
- Standard DIN tube fittings and adapters
- Nut and cutting ring assemblies (EO-PSR, EO-2, EO-DPR)
- Hydraulic hoses and rigid steel tubing (metric and SAE sizes)
