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 5910-01-214-5483
NSN 6320-01-449-1014
NSN 5990-01-143-2518
NSN 6150-00-470-7136
NSN 6135-01-371-9209
NSN 6620-01-162-0220
NSN 5945-01-076-0372
NSN 5996-01-315-3002
NSN 6110-01-392-1936
NSN 4140-01-097-6158
NSN 5965-00-226-7870
NSN 5835-00-907-0777