當然normal
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we are talking about different seals
-xxhhwxc-
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(180 bytes)
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08/04/2010 postreply
12:57:39
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we are talking the same seal. Valve seal also called valve stem
-biglow-
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(127 bytes)
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08/04/2010 postreply
14:03:03
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No! what you mentioned is oil control ring on piston
-xxhhwxc-
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(115 bytes)
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08/04/2010 postreply
14:25:57