Field feedback matters because real machines face contamination cycles that controlled tests cannot fully reproduce. Integrated COMBI Seals are designed for hubs, axles, shafts and bearing housings exposed to mud, dust and abrasive debris, where the practical concerns are grease contamination, shaft wear, leakage and repeat downtime. Their integrated exclusion and lubricant-retention functions help protect the critical sealing zone while simplifying the sealing arrangement. Maintenance teams should evaluate performance using actual service intervals, grease condition, shaft-track wear and failure frequency. The value of the seal is measured by fewer repeat repairs and more predictable maintenance, not by appearance alone. Dimensions, materials and operating limits must still be matched to the specific machine.