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 6130-00-074-4112
NSN 6685-00-062-4499
NSN 5990-00-079-5406
NSN 6650-00-190-5158
NSN 6135-00-850-3177
NSN 5925-00-297-8821
NSN 5965-01-598-1231
NSN 6240-01-225-0037
NSN 5920-00-170-9081
NSN 6145-01-317-2230
NSN 6610-00-933-9262
NSN 6145-01-614-3234