CFKS utilizes high-performance TPU as the core compound for the IDU series, offering a superior balance of tensile strength, tear resistance, and compression set compared to standard NBR. Where high heat or aggressive synthetic hydraulic oils are present, alternative formulations like FKM or specialized hydrolysis-resistant PU can be deployed. Polyurethane maintains its elasticity and structural geometry across severe mechanical cycling, significantly outlasting conventional elastomer seals under high-stress conditions involving mineral-based hydraulic oils, grease, and mild fluids.

Designed for straightforward, press-fit installation into closed ISO-standard gland grooves, the IDU 60*72*14 seal allows engineers and maintenance crews to reduce equipment downtime during cylinder overhauls. Its flexible elastomeric memory permits temporary deformation during insertion without permanent distortion or damage to the sealing edges. Thanks to its low dynamic friction coefficient and excellent extrusion resistance, the CFKS IDU seal reduces rod drag, extends maintenance intervals, and protects cylinder chrome plating from scoring.