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 5996-01-267-1681
NSN 6645-00-896-9430
NSN 5996-01-088-8715
NSN 7035-01-386-3004
NSN 5998-00-964-3227
NSN 5910-01-561-2154
NSN 5985-01-597-4069
NSN 5985-01-392-6972
NSN 5960-01-522-0391
NSN 5915-01-553-8852
NSN 5999-01-302-3476
NSN 6150-01-192-7399