Hydraulic rod seals for internal sealing
Rod seals are among the most important sealing elements in a hydraulic system. They seal the system on the rod side and are exposed to the full operating pressure of the application.
If a rod seal no longer functions properly, this usually becomes immediately visible through leakage. This makes the right selection critical – depending on installation position, sliding speed, pressure load, medium, and temperature.
The right rod seal for your application
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Send us your inquiry with dimensions, material, medium, temperature range, pressure, and operating conditions. Our team will review the right solution for your application.
Rod seals from INNSEALS
Rod seals are used in hydraulic cylinders to seal the system internally at the piston rod. They prevent hydraulic fluid from escaping from the cylinder and are therefore critical for the tightness and function of the entire system.
Because rod seals are directly exposed to the operating pressure, the profile, material, and installation situation must be precisely matched to the application. An incorrectly selected or worn rod seal quickly leads to leakage and should be replaced immediately.
Rod seals in the hydraulic sealing system
Rod seals work together in the system with wipers, guide elements, and other sealing elements. The wiper protects against external contamination, guide elements stabilize the piston rod, and the rod seal provides pressure-side sealing.
Only the right combination of these components ensures reliable function, low leakage, and a long service life of the hydraulic cylinder.
Functions
- rod-side sealing of the hydraulic system
- sealing against operating pressure
- prevention of leakage to the outside
- ensuring proper cylinder function
- support for controlled stroke and pulling movements
- protection of system performance under pressure load
Application
- hydraulic cylinders
- industrial hydraulics
- mobile hydraulics
- construction machinery
- agricultural machinery
- presses
- conveying technology
- mechanical and plant engineering
- stroke and pulling movements
pressure-loaded - cylinder systems
Variants
Rod seal profile SD17
Rod seal profile SD18
Rod seal profile SD19
Rod seal profile SD20
Rod seal profile SD21
Rod seal profile SD22
Rod seal profile SD23
Rod seal profile SD24
Rod seal profile SD25
Rod seal profile SD26
Rod seal profile SD27
Rod seal profile SD28
Rod seal profile SD29
Rod seal profile SD32
Rod seal profile SD33
Rod seal profile SD34
Rod seal profile SD35
Rod seal profile SD36
Rod seal profile SD38
Rod seal profile SD39
Rod seal profile SD40
Rod seal profile SD42
Rod seal profile SD43
Rod seal profile SD45
Rod seal profile SD46
Rod seal profile SD48
Rod seal profile SD50
Rod seal profile SD59
Rod seal profile SD63
Rod seal profile SD64
Rod seal profile SUC
Rod seal profile SUR
Your FAQs answered
Frequently asked questions:
Hydraulic rod seals seal the piston rod to the outside. They prevent hydraulic fluid from escaping from the cylinder and simultaneously protect against the ingress of dirt.
Rod seals are needed whenever a piston rod is led out of the cylinder. They are essential for safe and clean external sealing.
Yes, wear or damage frequently leads to visible leakage. This can not only reduce efficiency but also affect the environment and adjacent components.
Rod seals seal to the outside, while piston seals maintain pressure within the cylinder between two chambers. Both perform different tasks in the hydraulic system.
