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 5990-01-627-8097
NSN 5910-01-449-8680
NSN 6110-01-188-7432
NSN 6650-00-879-5834
NSN 6645-00-105-7010
NSN 6110-01-066-1680
NSN 5920-01-473-0078
NSN 5996-00-826-3198
NSN 5935-00-918-4514
NSN 6650-01-467-2355
NSN 6145-01-183-8570
NSN 5910-00-637-2609