Static Seals

O-rings and other static seals are most often used for radial compression, e.g. in valves, fittings, hydraulic and pneumatic cylinders. They are used for sealing inwards from the inside and from the outside. If the sealing gap is equal to zero due to design measures, pressures up to 500 bar and higher can be sealed. For high or pulsating pressures and technically conditioned larger gaps, the use of support rings is recommended. O-rings are also used as static seals with axial deformation, e.g. as flange or cover seals. At high pressures, it is necessary to ensure that the preload force of the screws is sufficiently high and that the metal parts are firmly seated. In this way, the sealing surfaces cannot separate even under pressure and no gap is created. With an assumed optimal construction, pressures of 1000 bar and more can be sealed in this way.

When designing and manufacturing installation spaces for static seals, it is necessary to follow the recommendations generally applicable to the construction of sealing elements. In particular, it is essential to adhere to the surface roughness of the sealing groove, Ra ≤ 1.6 μm and Rt ≤ 6.3 μm, and before assembly, also ensure that the sealing groove is free of potential contaminants and that there are no sharp edges, burrs, or other surface imperfections at the given location. It is also necessary to observe the recommended size of the lead-in chamfer in the cylinder or on the piston. Otherwise, damage to the sealing lips may occur during assembly.

Thanks to our technological equipment, we can manufacture sealing elements (and more) up to an outer diameter of 505 mm. However, in cooperation with verified international partners, we can also offer seals of significantly larger diameters.

We maintain a large stock of basic materials, from the smallest sizes up to diameters exceeding 500 mm. This enables us to respond flexibly to urgent requests. We typically manufacture seals within a few days, but in case of need (e.g., breakdowns, urgent repairs of hydraulic equipment), we can produce seals virtually on demand.

We manufacture sealing elements starting from a single piece. However, thanks to the automation elements we utilize in production, we can also efficiently produce large series. We use a wide range of machining tools specifically developed for manufacturing seals and machining specific sealing materials. This enables us to produce many non-standard profiles and shapes, or to perform shape and dimensional modifications of standard profiles.