Trelleborg Sealing Solutions has launched the Stefa high-pressure radial shaft seal portfolio for demanding applications.
Stefa high-pressure radial shaft seals (HPRSS) are optimised to improve sealing performance for various speed, chemical compatibility, and pressure challenges. Suitable for various types of hydraulic motors and pumps, Stefa seals are proven at pressures of up to 20MPa and speeds of up to 17 metres per second (MPS). They also feature innovative engineered designs that compensate for shaft misalignment, ensuring reliable sealing under extreme conditions.
The range includes the well-established HP20 series which utilises a patented design geometry that self-balances under strong pressure with a metal retainer that prevents lip extrusion and dissipates heat, extending service life.