Industrial seal self study guide - SKF.com

Chapter 5 Review (cont.)
7. Substitute lip materials will extend a seal’s life, no matter which material is chosen.
❑ True ❑ False
8. A combination seal or a double lip seal will always do a better job than a single lip design.
❑ True ❑ False
8. F
9. Seal width refers to the diameter of the hole in the housing into which the seal is fitted.
❑ True ❑ False
9. F
10. Fluoroelastomer is generally an acceptable sealing lip material substitute for silicone.
❑ True ❑ False
10. T
11. There are no acceptable sealing lip material substitutes for nitrile.
❑ True ❑ False
12. The temperature of the lubricant being retained is the only temperature
reading critical to seal selection.
❑ True ❑ False
13. When an exact replacement is not available, your best option is substitution
of a similar material and design.
❑ True ❑ False
14. In SKF’s single lip vs. double lip test, the single lip outlasted the double lip by
nearly 1000 hours.
❑ True ❑ False
15. SKF’s “WasteWatcher” seal inventory control system helps control costs
of replacement seals.
❑ True ❑ False
7. F
11. F
12. F
13. T
14. T
15. T
52