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 5945-00-227-8581
NSN 5960-01-503-0362
NSN 5975-00-582-1460
NSN 5999-01-442-4750
NSN 5895-00-205-2924
NSN 5895-00-105-0997
NSN 6105-01-003-7959
NSN 6610-01-218-6246
NSN 5920-01-102-2442
NSN 5996-01-262-8953
NSN 5990-01-057-4191
NSN 2925-00-806-7972