Common Seal Failures Caused By Dust and How Premium Reinforced COMBI Seals Solve Them

Customer problem: Dust causes lip abrasion, blocked drain paths, shaft grooving, lubricant contamination and bearing distress.

Practical solution: A reinforced COMBI seal addresses multiple failure modes with stable fit, protected lips and staged contamination barriers.

Problem-Solving Benefits

• Targets common contamination failure modes

• Stabilizes fit and lip contact

• Protects bearings and shaft surfaces

Recommended application: machines suffering lip abrasion, shaft grooving and dirty bearings.

40 Product Attributes

1. Type: reinforced COMBI rotary shaft seal

2. Primary function: dust exclusion

3. Secondary function: oil or grease retention

4. Structure: integrated combination seal

5. Lips: dedicated dust and oil lips

6. Barrier: contact plus labyrinth stages

7. Contaminants: dust, grit, sand, mud, residue

8. Motion: rotary shaft

9. Rotation: bidirectional or reversing

10. Duty: heavy and continuous

11. Case: rigid metal shell

12. Reinforcement: roundness and alignment support

13. Mounting: housing press fit

14. OD: rubber-covered or metal-cased

15. Elastomers: NBR, HNBR or FKM

16. Metal: carbon or stainless steel options

17. Spring: optional garter spring

18. Hardness: application-selectable

19. Temperature: compound-dependent

20. Speed: shaft-size and rpm dependent

21. Pressure: non-pressurized or low pressure

22. Shaft size: custom metric or inch

23. Housing bore: custom to drawing or sample

24. Width: customizable

25. Tolerance: controlled interference fit

26. Shaft finish: fine and lead-free

27. Runout: within equipment limits

28. Lubrication: compatible oil or grease

29. Abrasion resistance: dusty-duty option

30. Corrosion resistance: material-selectable

31. Water exposure: splash and wet-mud resistant

32. Vibration: reinforced fit

33. Impact protection: shielded lip layout

34. Orientation: dust lip faces contamination

35. Tooling: flat full-case driver

36. Maintenance: inspect debris and lubricant

37. Failures reduced: lip wear, shaft scoring, dirty bearings

38. Customization: size, compound, case, spring, lips

39. Quality control: dimensions, appearance, lip integrity

40. Applications: axles, hubs, gearboxes, final drives

Selection and Installation

Confirm dimensions, rpm, temperature, lubricant and contamination level. Install squarely, lubricate the lips and protect them from sharp splines, threads and edges.