Industrial seal self study guide - SKF.com

7. Careless installation is a common reason for seal problems.
❑ True ❑ False
8. In wooden block installation, the sealing force of the installation tool should be applied
uniformly across the seal case, not concentrated in the center.
❑ True ❑ False
8. T
9. A cocked seal is perpendicular to the shaft and bore.
❑ True ❑ False
10. Shaft and bore diameters should match those specified for the seal selected.
❑ True ❑ False 10. T
7. T
9. F
11. An arbor press does not apply uniform pressure against a seal.
❑ True ❑ False
11. F
12. A direct blow on one side of the seal distorts the shell and can cause the lip to be
pressed against the shaft.
❑ True ❑ False
12. T
13. The new seal should face the opposite direction of the original one.
❑ True ❑ False
13. F
14. Using the arbor press method to set the seal perpendicular to the shaft when
installing a “through” bore, apply pressure through a steel plate or plug larger than
bore diameter.
❑ True ❑ False
14. T
15. The best pre-lube to use is the lubricant being retained by the seal.
❑ True ❑ False
16. V-rings can not be stretched when installing them on shafts.
❑ True ❑ False
15. T
16. F
17. Control wire connections on HS7 split seals can be used for oil sealing applications
❑ True ❑ False
17. F
18. With V-rings, it doesn’t matter where they are positioned on the shaft so long as the
shaft diameter is correct.
❑ True ❑ False
18. F
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