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 6620-00-415-1829
NSN 5975-00-281-5587
NSN 5935-00-235-5673
NSN 6320-00-306-0124
NSN 6650-00-981-9501
NSN 5985-00-584-3795
NSN 5998-00-159-7994
NSN 5950-01-509-6293
NSN 5996-00-940-8927
NSN 6130-01-120-7600
NSN 6320-00-186-6452
NSN 5950-00-498-3507