Specific matl is silicone rubber
A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.
NSN 6220-00-255-5652
NSN 5925-00-875-1296
NSN 6105-00-200-8074
NSN 5985-01-331-7949
NSN 5965-01-296-8991
NSN 5835-01-359-2575
NSN 5895-00-850-8838
NSN 6110-01-155-9446
NSN 6105-00-932-5309
NSN 6135-00-613-1068
NSN 7035-00-417-2967
NSN 6220-00-296-4101