Premium Heavy-Duty Reinforced COMBI Seal for Dust Contamination and Shaft Oil Retention

Problem: Heavy-duty shafts face impact, vibration and abrasive debris that quickly overload standard oil seals.

Solution: The COMBI structure uses a rigid case and separate dust and oil lips to maintain sealing stability in severe duty.

Key Benefits

• Combines external dust protection with oil retention

• Supports stable sealing under vibration

• Reduces premature heavy-equipment seal failure

40 Product Attributes

1. Type: heavy-duty reinforced COMBI seal

2. Primary function: contamination exclusion

3. Secondary function: shaft oil retention

4. Structure: integrated combination seal

5. Lip system: dust and oil lips

6. Case: rigid reinforced shell

7. Elastomer: NBR, HNBR or FKM

8. PU option: available for dust lip

9. Case metal: carbon or stainless steel

10. Spring: optional garter spring

11. Lubricants: oil and grease

12. Contaminants: dust, grit, sand and mud

13. Motion: rotating shaft

14. Rotation: either direction

15. Duty: heavy-duty continuous use

16. Pressure: low-pressure applications

17. Temperature: material dependent

18. Speed: application dependent

19. Shaft diameter: custom

20. Housing bore: custom

21. Width: custom

22. Fit: controlled interference

23. Shaft finish: fine, lead-free surface

24. Runout allowance: equipment specific

25. Eccentricity: low recommended

26. Installation: square press fitting

27. Orientation: dust lip outward

28. Pre-lubrication: recommended

29. Abrasion resistance: enhanced compound option

30. Corrosion option: available

31. Splash resistance: supported

32. Vibration resistance: reinforced

33. Impact protection: shielded geometry

34. Leak control: oil-retaining lip

35. Wear control: reduces shaft scoring

36. Maintenance: supports longer intervals

37. Customization: size and material

38. QC: dimensional and visual inspection

39. Applications: drive shafts, hubs and gearboxes

40. Supply: aftermarket and OEM

Selection note: Final design should be confirmed against operating speed, shaft condition, lubricant and contamination level.