Tech data supplied is from tm 10-3835-241-14&p-2, section 0353 00-3, figure 17, part number 12
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 5910-00-526-0694
NSN 5920-01-505-7409
NSN 6110-00-171-2214
NSN 6620-00-740-3699
NSN 5945-01-485-5043
NSN 6645-00-646-6631
NSN 5835-00-286-5432
NSN 6150-01-383-7068
NSN 6145-00-512-6675
NSN 6320-00-513-8376
NSN 6320-01-067-0474
NSN 5835-00-787-8122