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 5990-00-165-9195
NSN 6145-01-464-7813
NSN 5895-00-290-6501
NSN 7035-01-351-4111
NSN 5835-01-263-1293
NSN 7035-00-360-2008
NSN 5910-01-236-4969
NSN 5990-01-658-9964
NSN 5910-01-360-3692
NSN 6650-01-445-5394
NSN 5960-01-333-1828
NSN 5998-00-563-7137