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 5835-01-426-6573
NSN 5835-01-349-5420
NSN 6105-01-634-0322
NSN 6105-01-415-5555
NSN 5950-00-113-5347
NSN 5925-00-916-8605
NSN 6650-00-991-1265
NSN 6135-01-513-3581
NSN 6105-01-329-6775
NSN 5910-01-448-5734
NSN 6130-01-365-8017
NSN 6610-01-652-1832