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 5996-01-450-2300
NSN 7035-01-388-6943
NSN 6610-00-104-0552
NSN 5935-01-111-7195
NSN 5915-00-952-5658
NSN 6650-01-651-9502
NSN 7035-00-890-7649
NSN 5855-01-308-0955
NSN 7035-01-204-7481
NSN 5835-01-347-6362
NSN 2925-00-994-8684
NSN 5895-00-153-2595