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“O” Rings are made of a synthetic material which is commonly known as “___________”CorrectIncorrect
They range in size from a cross section diameter of 1mm and an internal diameter of 3mm to a cross section diameter of 8mm and more and an internal diameter of ________.CorrectIncorrect
“O” rings are identified by reference numbers which reflect various prefixes and the internal diameter and width (cross section diameter) of the ring. For example, a ring with reference number RMT 20 X 2 indicates a ring with inside diameter of 20mm and a width of ______.CorrectIncorrect
“O” rings can be used for either static (stationary) sealing or dynamic (motion)CorrectIncorrect
The two most common types of gland packing in the mining industry.
A._______coated square braided asbestos packing.
B. ________coated square braided asbestos packing.CorrectIncorrect
What is an acceptable initial drip rate?
An initial seepage of up to _____drops per minute is normal.CorrectIncorrect
What is the acceptable drip rate after the running-in period?
__ -70 drops per minute.CorrectIncorrect
When is the most critical period for any packing?
The most critical period of any packing is the initial___-___after installation.CorrectIncorrect