GORE™ GFO® Packing
Technical Information
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Versatile and cost effective.
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Because GORE™ GFO® Packing is so durable and lasts so long,
its in-use cost is much lower than many other packing options. Since
the packing itself represents only 3% of the total cost of repairing
pump packing failures, the real savings gained by a longer-running
pump is many times greater. Experience reduced downtime, small fluid
losses and lower total labour cost.
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The general service packing.
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| GORE™ GFO® Packing can be used for a wide variety of sealing applications throughout
industry. It can be used in many pumps, including centrifugal, rotary,
turbine, and reciprocating. It is also useful in valves, agitators,
mixers, dryers and refiners. Because of this wide range of service,
GORE™ GFO® Packing can be your standard packing solution. |
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High performance comes from a combination of properties.
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The performance of packing is a function of many different material
properties. For example, thermal conductivity is an important property
that differentiates black PTFE packing from pure PTFE. To predict
how a packing will work, it is not enough to focus on a single performance
attribute. To gain higher conductivity, you might sacrifice shaft
wear, sealability and chemical resistance.
Conformability ... lubricity ... low coefficient of expansion ...
braid construction ... low abrasiveness ... ease of installation.
All have an impact on the ultimate performance of the packing. Ultimately,
the best indicator of performance is time in service in pumps. In
numerous cases where GORE™ GFO® Packing has been tested versus competing
alternatives, significant increases in packing life have been experienced.
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Different fibres can cause major problems.
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Some
users have tried "trading off" GORE™ GFO® Packing performance
for lower price. However, low-price competitive "look-alike"
black PTFE fibre packings perform differently. Recently, some look-alike
products have targeted one performance criteria - thermal conductivity
- suggesting that this attribute makes them "equivalent"
to GORE™ GFO® Packing. Close inspection of some competitive products
show that these consist of pure PTFE with a thermally conductive layer.
The design is much like a wire: a thermally conductive interior surrounded
by an insulator. Pull on these fibres and they will turn white. The
material in contact with the rotating shaft is pure PTFE, known for
its thermal expansion and shaft scoring behaviour at higher service
temperatures. This outer PTFE layer of the look-alikes also raises
questions about how efficiently this packing is able to provide lubrication
during break-in and service of the packing.
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More Information
Please, visit our multilingual download page for Data Sheets, Technical PDFs, Installation Instructions etc.
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