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 6610-01-131-5714
NSN 6110-01-477-6707
NSN 5910-00-401-1202
NSN 5990-01-502-8209
NSN 6650-00-064-7199
NSN 6105-00-119-2212
NSN 6645-00-392-8728
NSN 5999-01-344-3059
NSN 5835-01-108-4980
NSN 6135-00-767-0331
NSN 5910-00-128-0840
NSN 4140-01-260-8106