Fluid power seals — machined
Turned hydraulic and pneumatic sealing elements — piston, rod, wiper and guide — made to measured dimensions. The functional design matches the moulded equivalents; only the production route differs. SES holds the range as an authorised SKF distributor, covering bore and rod range Small bores to well over 1 000 mm; pressure To 40 MPa and above depending on material and profile; materials Polyurethane, PTFE and filled grades, POM, PA, PEEK; profiles Piston, rod, buffer, wiper and guide geometries. Executions include piston seals, rod and buffer seals, wiper seals, guide rings, among others. It is specified most often into hydraulic press cylinders in forging and fabrication shops and mill screw-down and balance cylinders during an outage. Every part is genuine SKF through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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Trusted across Metals & Energy
Supplying India’s Industrial Names.
From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
Elements
Piston, rod, buffer, wiper, guide
Route
CNC turned, no mould tooling
Sizes
Metric, imperial and non-standard
Use case
Outages, obsolete plant, one-offs
Where it runs.
You will find Fluid power seals — machined in the parts of a plant where this particular duty actually occurs. In practice that means hydraulic press cylinders in forging and fabrication shops, mill screw-down and balance cylinders during an outage, imported machinery with unlisted seal dimensions, and equally pneumatic actuators on older process plant, rebuilt cylinders where the bore has been honed oversize, test rigs and prototype hydraulic assemblies. What links them is the duty rather than the machine name — elements: Piston, rod, buffer, wiper, guide. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the SKF range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. The bore has been honed oversize during the repair — A machined seal cut to the new dimension rather than the nominal. This is exactly the case where turning to measurement beats fitting a catalogue size. A complete set is needed but only some sizes are on the shelf — The whole set machined together to one measured drawing. Mixing a turned piston seal with worn guides simply moves the problem along the cylinder. The groove form is unusual or the housing is closed — A profile designed for that groove, including split or fold-in forms. Machining allows a shape a mould could not release. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Give us the pressure and the fluid along with the dimensions when you order a turned set. A profile that is correct dimensionally but wrong in material will fail faster than the worn seal you took out.