All profiles listed here are SKF standard machined K02 piston seals and can be produced in virtually any dimension and in different materials.
K02 piston seals are asymmetric, single-acting hydraulic lip seals designed to seal pressurized space against the atmosphere or – in case of back-to-back arrangement with intermediate guide ring – to seal between two pressurized spaces, mainly for reciprocating movements.
These seals are part of the comprehensive SKF machined seals assortment and the design is based on applications in standard hydraulic systems with conventional hydraulic oils. The operating parameters are as defined in the sealing and material data sheet. Requirements deviating from these parameters can be met to a certain degree by changing the geometry in the SKF SEAL JET machine software.
Application range
- Reciprocating pistons in hydraulic cylinders
- Piston seal for applications with large extrusion gap and without special impact loading
Materials
Material selection has a significant impact on the seal performance as well as reliability of the whole system.
Recommended sealing materials and operating parameters are defined in the seal data sheets.
For special requirements on service temperature and media compatibility, various ECOPUR polyurethane and SKF Ecorubber materials are available.
For increased wear resistance and higher pressure ranges we recommend K02-P respectively K02-PD with ECOPUR polyurethane and SKF Ecotal materials, but attention should be paid to the difference in chemical resistance and service temperature range.
For increased chemical and thermal resistance, we recommend K02-R respectively K02-RD made of SKF Ecorubber materials, but attention should be paid to the limitation in wear and pressure resistance.
The material of the backup ring is mainly selected based on the diameter (SKF Ecotal available up to 400 mm). Please consider moisture swelling when using SKF Ecomid.
Available seal versions
There are different versions of the K01 seals with specific features available (please find more detailed information in the related detailed profile descriptions and seal data sheets linked below).
| K02-P | K02-PD | K02-R | K02-RD |
 |  |  |  |
