Millwright - 2nd Year: Mechanical Seals Exam
Questions and Answers with Verified
Solutions | Latest Updated 2026
What are the two basic methods of Mechanical seals and compression
sealing fluids in a closed system? packing.
What is the main difference Packing must leak to lubricate and/or seal
between shafts,
compression packing and while mechanical seals are designed not to
mechanical seals? leak or
to minimize leakage.
What is the primary use of Rotating shafts of pumps or compressors.
mechanical seals?
What is the equivalent of a 3600 drops per hour, 1.5 gallons per day,
leakage and 550.0
rate of 60 drops per minute? gallons per year.
What is the leakage rate of Approximately 5 drops per hour, 120 drops
mechanical seals? per day,
and 0.8 gallons per year.
What are some costs associated Shaft/sleeve replacement, maintenance
with costs,
compression packing? downtime, housekeeping, environmental
considerations, and energy consumption.
, How can using mechanical seals By reducing the costs associated with
reduce costs? compression
packing.
What are some potential Higher level of training, higher initial
drawbacks installation
of using mechanical seals? costs, and potential need for
special/unique
designs.
What is the purpose of the caution To alert the reader to potential hazards or
mentioned in the notes? risks
associated with the topic being discussed.
Why are mechanical seals Mechanical seals fail completely when
prohibited they fail to
in pumps used for fire safety? seal.
What is the focus of this module? Application of mechanical seals for pumps.
What is the objective of the To describe the working principles and
module? components of mechanical seals.
How are mechanical seals By design or arrangement.
classified?
What are the four basic types of Primary sealing faces, mechanism for
components in mechanical seals? holding the
faces together, secondary seals, and metal
components.
Questions and Answers with Verified
Solutions | Latest Updated 2026
What are the two basic methods of Mechanical seals and compression
sealing fluids in a closed system? packing.
What is the main difference Packing must leak to lubricate and/or seal
between shafts,
compression packing and while mechanical seals are designed not to
mechanical seals? leak or
to minimize leakage.
What is the primary use of Rotating shafts of pumps or compressors.
mechanical seals?
What is the equivalent of a 3600 drops per hour, 1.5 gallons per day,
leakage and 550.0
rate of 60 drops per minute? gallons per year.
What is the leakage rate of Approximately 5 drops per hour, 120 drops
mechanical seals? per day,
and 0.8 gallons per year.
What are some costs associated Shaft/sleeve replacement, maintenance
with costs,
compression packing? downtime, housekeeping, environmental
considerations, and energy consumption.
, How can using mechanical seals By reducing the costs associated with
reduce costs? compression
packing.
What are some potential Higher level of training, higher initial
drawbacks installation
of using mechanical seals? costs, and potential need for
special/unique
designs.
What is the purpose of the caution To alert the reader to potential hazards or
mentioned in the notes? risks
associated with the topic being discussed.
Why are mechanical seals Mechanical seals fail completely when
prohibited they fail to
in pumps used for fire safety? seal.
What is the focus of this module? Application of mechanical seals for pumps.
What is the objective of the To describe the working principles and
module? components of mechanical seals.
How are mechanical seals By design or arrangement.
classified?
What are the four basic types of Primary sealing faces, mechanism for
components in mechanical seals? holding the
faces together, secondary seals, and metal
components.
