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 5905-01-428-7774
NSN 5975-01-023-1977
NSN 5975-00-369-7306
NSN 5920-00-765-2867
NSN 6610-01-023-1918
NSN 6645-00-943-9063
NSN 5985-00-191-5134
NSN 5996-01-206-1329
NSN 5930-00-187-2732
NSN 5905-01-485-0234
NSN 5965-01-444-3098
NSN 5905-00-936-6061