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 5985-01-113-8326
NSN 5985-01-204-7382
NSN 5985-00-295-3919
NSN 5960-00-547-9180
NSN 6645-01-387-7209
NSN 5999-01-145-8249
NSN 5960-00-865-3463
NSN 5920-00-291-1379
NSN 5930-01-567-0167
NSN 6620-01-078-6372
NSN 6135-01-389-5787
NSN 5975-01-088-8753