Industrial seal self study guide - SKF.com

Final Exam
Congratulations. You have completed the Shaft Seals Industrial Self-Study Program.
Now you are ready to test your knowledge about SKF seals, Speedi-Sleeves and Scotseals
in this Final Review.
First, turn to the last page of this study guide. Remove the Final Review answer sheet by
tearing it out carefully along the perforated edge.
Begin the test. Be sure to answer every question; unanswered questions will be graded
as incorrect.
When you have finished the test, fold your answer sheet as indicated, with the return
address on the outside. Staple it closed; no envelope is required. Be sure to attach the
proper postage, and mail your answer sheet to SKF.
If you score 85% or more, you will receive a Certificate of Merit from SKF.
Please allow at least four weeks for grading.
If you have a seal problem that cannot be answered through this study guide, contact
your SKF representative. He’s backed by a full crew of technicians—product managers,
engineers and service personnel—who will gladly provide the assistance you need.
When you have a question, call SKF toll-free: 1-800-882-0008.
1 . A shaft seal is a barrier designed to retain lubricants and _________________ .
❑ a. confine pressure
❑ b. exclude dirt
❑ c. separate fluids
❑ d. all of the above
2. Selecting the right seal depends on application parameters, including
_________________ .
❑ a. shaft speed
❑ b. fluid compatibility
❑ c. operating pressure
❑ d. all of the above
3. When split seals are used in multiples, a _________________ is often used to separate
the seals and provide extra lubrication between them.
❑ a. horizontal shaft
❑ b. slotted washer
❑ c. control wire
❑ d. butt joint
4. Premature seal failure can be caused by _________________ .
❑ a. nicks on the bore chamfer
❑ b. improper seal installation
❑ c. shaft-to-bore misalignment
❑ d. all of the above
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