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Graphite Compression Packings

Style Rotary/Reciprocating/Valve Applications
229 Yes Yes Yes Most high temperature corrosive acid and caustic applications, including nuclear services.
230 Yes No Yes Most chemicals and acids, especially corrosive applications. It is only used for bull or end rings.
280 No No Yes Nuclear plant services such as water, steam, oils, and most chemicals. It is only used for bull or end rings.
686 Yes No Yes Steam, water, oil, solvents, alkalies, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine. Requires bull rings for high pressures.
687 Yes No Yes Steam, water, oil, solvents, alkalies, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine.
688 Yes No Yes Steam, water, oil, solvents, alkalies, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine.
689 No No Yes Steam, water, oil, solvents, alkalies, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine.
690 Yes No Yes Steam, water, oil, solvents, alkalies, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine.
691 No No Yes Steam, water, oil, solvents, alkalies, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine.
 
 　
 
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