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 5999-00-081-9413
NSN 5996-01-546-6768
NSN 6130-00-786-1775
NSN 2925-00-147-3801
NSN 6685-01-295-9415
NSN 5990-01-203-6089
NSN 5960-01-516-7264
NSN 6150-00-395-9999
NSN 5925-01-373-6028
NSN 6650-01-267-3223
NSN 5905-01-589-0378
NSN 6135-00-862-2921