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 5855-00-079-2370
NSN 6685-00-905-5601
NSN 5905-00-064-3015
NSN 5999-01-446-5742
NSN 5935-00-420-0478
NSN 5996-00-707-6228
NSN 5945-01-334-9697
NSN 5920-01-078-1323
NSN 5895-00-446-3988
NSN 5920-01-491-2734
NSN 4140-01-631-4447
NSN 6650-01-406-9852