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 5925-00-732-7530
NSN 5920-01-469-6025
NSN 5996-00-472-9157
NSN 5999-00-212-7853
NSN 7035-01-222-0136
NSN 6645-00-724-2199
NSN 5960-01-215-0992
NSN 5935-01-426-8969
NSN 6650-01-566-0884
NSN 5905-01-165-5221
NSN 5965-01-303-6105
NSN 4140-01-590-1632