Manufactured from an advanced TPU, this seal exhibits superior tensile strength and hardness compared to standard NBR or FKM options in pure hydraulic oil environments. Polyurethane provides the structural rigidity necessary to resist gap extrusion under heavy pressure loads while maintaining elasticity. It demonstrates outstanding compatibility with mineral-base hydraulic fluids, biodegradable oils, and standard lubricating greases, drastically reducing material degradation and preventing localized thermal breakdown under continuous cycling.

Achieving an optimal service life depends heavily on proper installation. Thanks to the high elasticity of the CFKS PU compound, this U-cup seal can be easily deformed for snap-in installation into closed grooves, eliminating the need for expensive split-gland cylinder designs. During routine maintenance, the low-friction characteristics of the PU material ensure that the cylinder bore experiences minimal scoring. The robust material memory allows the lips to maintain constant radial pre-tension, extending maintenance intervals and minimizing sudden pressure drops or unexpected operational downtime.