A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6610-01-248-4339
NSN 5965-00-682-3567
NSN 2925-01-435-9057
NSN 5990-01-277-2118
NSN 6105-01-445-7182
NSN 5905-01-491-4321
NSN 6130-01-219-7007
NSN 5996-00-927-7729
NSN 6145-00-144-0918
NSN 5950-01-099-1048
NSN 6135-01-556-3352
NSN 5905-01-297-1713