Industrial seal self study guide - SKF.com

96. Ferrous and other commonly used metallic materials (such as aluminum)
are acceptable bore materials.
❑ True ❑ False
97. The heavy-duty DF seal’s sealing ring and mating ring rotate against each other
at right angles to the shaft to form a leak-proof seal.
❑ True ❑ False
98. When an exact replacement is not available, your best option is substitution
of a similar material and design.
❑ True ❑ False
99. V-Rings must be lubricated for all operating conditions.
❑ True ❑ False
100. The most economic repair option for a worn shaft seal is to install a wear sleeve.
❑ True ❑ False
101. A seal should be pressed into housings with a 15˚-30˚ chamfer.
❑ True ❑ False
102. A seal can have a “swollen” appearance and still be acceptable with the system
media.
❑ True ❑ False
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