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 5910-01-151-2953
NSN 5910-01-328-7909
NSN 5905-01-656-7731
NSN 6645-00-763-1424
NSN 2925-01-034-3774
NSN 2925-01-651-8683
NSN 6650-01-571-5430
NSN 6105-01-512-1140
NSN 6110-00-222-3317
NSN 6220-01-181-5854
NSN 5960-00-269-3726
NSN 5915-01-450-0012