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Style 7830 packing is ideally suited for use in severe service valves and rotary shaft applications. It handles strong acids and alkali solutions except fuming nitric acid, oleum and fluorine. It can be used to seal steam, water, oil, solvents, alkalies, and acids. It is often used as end rings for packing sets utilizing softer packings that might tend to extrude. Style 7830 also handles high temperatures, extremely high shaft speeds (see Service Limits below), most strong chemicals, and reduces shaft wear.
Style 7830 packing is a rugged premium grade, low friction, high strength, proprietary graphite fiber, twisted together and interlock braided. Style 7830 is treated with pure graphite powder to provide a bearing film and protect shafts from scoring. It also acts as a blocking agent to prevent wicking.
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Minimum Temperature |
-400oF (-204oC) |
|
Max. Temperature in Air |
840oF (450oC) |
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Max. Temperature in Steam |
1200oF (650oC) |
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Shaft Speed |
3900 fpm |
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pH Range |
0 - 14 (except strong oxidizers) |
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Pressure |
|
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Rotating |
435 psi (30 bar) |
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Reciprocating |
1450 psi (100 bar) |
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Static |
4350 psi (300 bar) |
Technical Data Sheet
SGI Packing 7830
