Thread: Picked up this 7DP4 the other day
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Old 08-28-2015, 03:18 PM
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miniman82 miniman82 is offline
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Quote:
Originally Posted by John Marinello View Post
Bluing of the cup pertains to oxidation of the metal. That would suggest that the tube is gassy.
The tube is at atmospheric pressure during button sealing, so you're right about that.
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