Material integrity directly dictates the service life of dynamic hydraulic components. For this UN seal, we utilize an advanced Polyurethane (PU) compound featuring a high hardness rating of 90-95 Shore A. Compared to standard NBR or FKM, PU provides significantly higher tensile strength and absolute superior resistance to abrasive particles suspended in hydraulic fluids. This material excels in mineral-based hydraulic oils, grease, and aliphatic hydrocarbons, successfully preventing premature structural breakdown or extrusion when facing pressure spikes up to 40 MPa.

Minimizing equipment downtime requires a seal that is both highly durable and straightforward to service. The CFKS UN oil seal features an optimized radial cross-section that facilitates easier snapping into closed housings, reducing installation time during field maintenance. Its high-modulus PU construction resists scoring during assembly, even when passing over un-chamfered ports. Thanks to the low-friction coefficient inherent to our specialized polyurethane formulation, the seal exhibits minimal heat buildup, dramatically extending maintenance intervals and protecting costly cylinder rods from scoring.