No. 12 rubber stopper
A closure to fit within the mouth of a bottle. It is made of cork, rubber, glass and glazed ceramics, paper, or plastic. It has other uses such as a closure for an oil hole, or bolt hole in a small machine assembly.
NSN 5996-00-347-9859
NSN 5855-01-258-5161
NSN 5990-01-143-2518
NSN 5960-00-496-6473
NSN 6685-01-426-8929
NSN 6620-01-418-3245
NSN 5999-00-633-7592
NSN 5905-00-548-4733
NSN 7035-00-946-2642
NSN 5965-01-646-6326
NSN 2925-00-149-0760
NSN 5835-00-761-5615