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 5975-00-389-6958
NSN 6240-00-197-6819
NSN 5975-01-656-0898
NSN 6150-01-318-6566
NSN 5910-01-319-9892
NSN 6685-01-363-0516
NSN 5965-01-064-4403
NSN 6650-00-119-3966
NSN 6650-00-407-5883
NSN 5855-01-375-2152
NSN 5925-01-258-4640
NSN 6145-01-536-9899