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Help me identify these parts

Wayne

Member
I got several of these parts when I purchased a Thiokol 2100 and an LMC 3700B. I don't think these parts go to either of these vehicles. Does anybody out these have any idea what these are?
 

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muleman

Gone But Not Forgotten
GOLD Site Supporter
The one with the threaded hole looks like an expanding freeze out plug.
 

Wayne

Member
The threaded hole doesn't go through the middle. It is about 3/4 inch deep on both sides. I thought it must be some sort of a roller. Expansion plugs that I am familiar with would have a hole through the middle allowing you to tighten a bolt and squeeze the rubber until it seals.
 
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