Industrial seal self study guide - SKF.com

Chapter 5 Review
To take this test, simply place a card or sheet of paper under the first question. After
you’ve read it (and answered it to yourself) slide the paper down below the next question.
The correct answer to the first problem will appear directly to the right of the new question.
Be sure not to skip any questions.
1. _________________ is a premium lip material for the majority of sealing applications
today.
❑ a. LongLife fluoroelastomer
❑ b. Fluoropolymer (PTFE seals)
❑ c. both of the above
❑ d. neither of the above
1. C
2. SKF seals are identified by an OEM part number or an SKF _________________ .
❑ a. stock number
❑ b. industrial part number
❑ c. drawing number
❑ d. all of the above
3. _________________ is an acceptable sealing lip material substitute for nitrile.
❑ a. Leather
❑ b. Felt
❑ c. Another nitrile
❑ d. none of the above
4. Selecting the right seal for a particular application depends on _________________ .
❑ a. size and speed
❑ b. pressure and temperature
❑ c. fluid compatibility
❑ d. all of the above
4. D
5. _________________ refers to the outside diameter of the shaft at the location where
the seal is mounted.
❑ a. Size bore
❑ b. Seal I.D.
❑ c. Seal width
❑ d. Shaft diameter
5. D
6. If the same size replacement is not available, _________________ .
❑ a. select a narrower seal
❑ b. select a wider seal
❑ c. select a different lip material
❑ d. either a. or b.
2. D
3. C
6. A
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