The type of O-ring that can be used with most petroleum and silicone fluids, hydraulic fluids, and
solvents is _____. - Buna-N
To lay out a new gasket, draw_______ for the diameter of the pipe opening and the outside diameter of
the flange. - Concentric circles
Once the size of a gasket or O-ri...
The type of O-ring that can be used with most petroleum and silicone fluids, hydraulic fluids, and
solvents is _____. - Buna-N
To lay out a new gasket, draw_______ for the diameter of the pipe opening and the outside diameter of
the flange. - Concentric circles
Once the size of a gasket or O-ring has been
determined, _____ factors must be considered before choosing a gasket or O-ring. - compatibility
The gasket that is made of stainless steel with a graphite insert is the______ gasket.
gasket. - spiral-wound
Natural rubber has limited chemical resistance
to________. - petroleum products
The gasket material that is not recommended for water service and has poor chemical resistance is_____
.- neoprene
Which of the following substances would be compatible with a nitrile gasket? - Alcohol
RTJ gaskets are used in ________ applications - high-pressure
The radius of a bolt circle is equal to__________. - half the diameter
, In gasket making, bluing ink is used to_____. - transfer the flange impression to the gasket
material
When tightening the bolts on a circular multi bolt flange, you should start at 12 o'clock and proceed
clockwise around the flange. - False
Graphite packings should not be used for applications
where____ is present. - oxygen
TFE/synthetic fiber packing is used in ________. - caustic chemical applications
Packing rings are usually installed in a _____
on revolving equipment. - gland
When installing new packing, stagger the
new cut end ____ from the cut end of the
ring before it. - 180 degrees
The approximate temperature range for _______
O-rings is -31 °F to 400°F. - Viton®
Gaskets made of natural rubber have limited solvent and oil ________ may become damaged by
petroleum products. - Resistance
A gasket must be able to withstand the required bolt torques without undergoing excessive _________. -
Plastic flow
A(n) _________ material will not react with other chemicals. - Inert
When a gasket loses thickness and protrudes from a flange, it is developing_______ . - Creep
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