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 5945-01-351-1871
NSN 6240-00-252-7695
NSN 6240-01-605-4455
NSN 6110-01-336-9546
NSN 6105-01-217-8263
NSN 5855-01-465-6144
NSN 6620-01-352-5640
NSN 5965-01-277-8589
NSN 6650-01-431-9625
NSN 5999-01-551-6143
NSN 6650-00-217-6292
NSN 5985-00-636-8689