Gaskets are materials used to seal one compartment of a device ...
Gaskets are materials used to seal one compartment of a device ...
Gaskets are materials used to seal one compartment of a device ...
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Table 2. Operating Conditions and Use Areas for<br />
Various Braided Packing Types<br />
Packing Type<br />
Advantages<br />
Operating<br />
Conditions*<br />
Use Area<br />
Squ<strong>are</strong> Braid<br />
~<br />
Wide spectrum<br />
<strong>seal</strong>ing ability<br />
High-speed<br />
rotation<br />
Low pressure<br />
600 psi<br />
Hot liquids<br />
Valve stems, expansion<br />
joints<br />
Braid-Over-Core<br />
Better shaft<br />
<strong>seal</strong>ing<br />
More resilient<br />
Variations in<br />
density<br />
High pressure<br />
Steam applications<br />
Low-speed rotation<br />
Nuclear powerplants,<br />
when congealing<br />
or<br />
crystalizing<br />
liquids <strong>are</strong> present,<br />
turbines and<br />
values in powerplants<br />
Interlocking Braid Denser and more<br />
stable<br />
General service<br />
High temperature/<br />
pressure<br />
Reciprocating and<br />
centrifugal pumps,<br />
agita<strong>to</strong>rs, valves,<br />
expansion joints<br />
Source: FSA 1983, A.W. Chester<strong>to</strong>n 1982, Klein 1987.<br />
NOTE: General service temperature for all types <strong>of</strong> braided packings <strong>are</strong> in<br />
the range <strong>of</strong> 500°Falthough depending on the use conditions, asbes<strong>to</strong>s<br />
packings can withstand temperatures between 1200-1500°F.<br />
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