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 5960-01-333-1828
NSN 6645-00-233-4286
NSN 5935-01-611-6292
NSN 5960-01-389-0629
NSN 6150-01-470-4261
NSN 4140-01-297-8324
NSN 5930-01-430-3670
NSN 6650-01-357-4410
NSN 5950-01-657-4245
NSN 6240-00-258-2389
NSN 5925-01-382-4907
NSN 5950-01-467-6697