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 6130-01-037-4011
NSN 5998-01-633-3226
NSN 5945-01-452-2518
NSN 5945-01-187-9245
NSN 5996-00-850-0118
NSN 5835-01-258-5597
NSN 6685-00-494-7885
NSN 5925-01-598-3177
NSN 5835-01-242-9806
NSN 5925-01-353-0351
NSN 6135-01-017-3001
NSN 6650-01-487-6274