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 5965-00-513-1352
NSN 5975-01-167-7952
NSN 2925-01-510-9378
NSN 6110-01-421-2714
NSN 5975-01-617-4456
NSN 5895-00-455-0248
NSN 5895-01-210-2604
NSN 6220-00-827-0227
NSN 5960-01-544-1273
NSN 6135-00-416-2898
NSN 5920-01-343-2769
NSN 6135-01-068-0119